If you’re a fan of weird twists in nature (like me), and enjoyed my November 25, 2024 post, “A Quirk of Nature: Fourwing Saltbush,” you may have lost many hours of sleep wondering how I could’ve missed such an obvious mistake! You know the one. The labeling error made when naming those cottonball-like insect galls hugging the Fourwing stems.
In my confusion (or wishing to cover all options?), I seemed to believe two different midge species were somehow responsible for the same gall.
Are they Rosette Bud Gall Midge galls or Fourwing Saltbush Wooly Gall Midge galls?
Decisions, decisions.
My Quandry quite clear, it was time to consult the experts.
A short 10 months later, confirmation arrived from the iNaturalist experts in all things “Fourwing.” All the puffy galls are none other than those made by Fourwing Saltbush Wooly Gall Midges!
And the answer to my question is well timed, as the stems of the female Fourwing shrubs are once again ‘heavy’ with Wooly Gall Midge galls. Now I know! Now you also know!
Enjoy this official correction, at long last, and wishing you sweet dreams.
As always, thanks for stopping by!
PS: My journal page was created by first sketching in graphite the two Fourwing stems, followed by outlining with loose ink lines from a Micron 005, adding a background of both soft and medium charcoal – blending with a stump, then using a Tombow Mono Zero eraser to clean up the ‘cottonballs,’ before adding watercolor pencil, color splatters, and eraser lines randomly placed through the charcoal background. A bit experimental, and lots of fun.
Like soft, fluffy snow! Glistening orbs of silky gossamer are floating about the neighborhood, drifting hither and yon in the gentle breeze. Suspended beneath each orb is a single reddish-brown winged seed that appears to coax its wind-propelled puff in a safe descent to the ground. But the white floss (the Coma) wants to fly, and it becomes a tug of war. As the weight of the seed overwhelms the ability (and the desire) of the floss to carry it, their brief relationship is severed. But both get their wish …. the floss flies free as the seed drops to the ground, hopefully landing in an ideal spot to overwinter and sprout next spring.
Welcome Fall!
When the air is full of Horsetail Milkweed parachutes and their ‘riders,’ I walk along the neighborhood roadways and collect a bounty of their new-crop seeds + floss to set free around our property. If they find the right soil, moisture, and light conditions for spring germination, the seeds will not only form the beginnings of a stand of these beautifully blooming, creamy-white milkweed flowers, but the plants might just play host to Monarch and Queen butterflies!
Now wouldn’t that be dandy!
(Of course, mature seeds from new plants will undoubtedly entice a hungry crop of well-dressed Milkweed Bugs next Fall. That’s OK! They have to eat too!)
Before hint of color
My Journal Pages ……
For something different, instead of using ink and watercolor, all sketches on these pages were created in graphite. The pods, seeds and the milkweed bug were sketched from my collected samples using a mechanical pencil loaded with a fine point HB lead. The touches of color were added with water soluble graphite.
Work in Progress #1Work in Progress #2
Thanks for stopping by ….. And Have a Fabulous Fall!
On August 31, National Diatomaceous Earth Day recognizes the diatom and the remarkable mineral it creates!
Have you ever heard of DiatomaceousEarth (DE)? If you answer “yes” then perhaps you brew your own beer, have a swimming pool in need of water filtration, or a vegetable garden that’s been invaded by a herd of hungry slugs. But did you know DE is a mineral1 composed of the fossilized remains of single-celled, microscopic algae called Diatoms? (More about diatoms in an upcoming post.) DE is truly a remarkable mineral, found around the world in ancient marine and lacustrine (freshwater lakes, streams, and rivers) sedimentary deposits.
Early Discoveries and Uses of DE
The year was 1836; the place, Northern Germany …… One day, a peasant named Peter Kasten was sinking a well when he encountered a mysterious-to-him layer of rock. Curious what this soft powdery rock might be, Pete took a sample to a friend who was a friend of a friend learned in the science of geology. This geologist carefully examined the rock then exclaimed (in German, of course), “Why this is the much prized and never-before-seen-in-Northern-Germany mineral known as Diatomaceous Earth! It has remarkably unique abilities to absorb, filtrate, polish, and stabilize! These qualities make Diatomaceous Earth (aka Diatomite) valuable and much sought after by numerous industries!”
Well, word spread and immediate exploration of the area commenced. It wasn’t long before numerous substantial deposits of lacustrine DE were discovered; some up to 92 feet thick! Extraction began in 1863. Until WWI, these sites comprised the world-wide production of Diatomite. Mining these deposits ended in 1994, when all of the DE deposits had been extracted.
But long before Pete’s discovery, Ancient Greeks used DE as an abrasive as well as a building material in lightweight bricks. Even in pre-historic times, DE was used in the ice-age cave paintings in France.
DE Deposits and Extraction – Worldwide
When diatoms die and fall to the bottom of marine and lacustrine waterbodies, they form large deposits. Over time, the organic portions of the diatoms weather away, leaving behind their hard silica shells. These remaining shells, called Frustules, with their opaline-like quality are what forms DE. Some of the largest deposits in the U.S. formed in ancient lakes that existed in California, Nevada, Oregon, and Washington. They also formed in oceans and occur along the coasts of North and South America.
Since WWI, exploration for and discovery of numerous DE deposits have occurred worldwide-wide, and are still on-going. Large mining companies have unearthed and continue to extract this mineral in substantial quantities, which is processed for use by industries that manufacture products for home and business (more on that below). DE deposits are (or have been) mined in many countries around the world, including the U.S., Mexico, Chile, Peru, France, Spain, Denmark, China, Canada, Argentina, Australia, Spain, Turkey, Libya, Russia, Mozambique, Ireland, and France. Today, the world’s largest DE mine, Colado Mine, is located just outside of Lovelock, NV, and has been in operation since 1959.
DE’s Modern Uses and Values
Today, DE is one of the most useful and durable substances known. The white to off-white powdery rock that makes up the more than 1 million year old DE deposits, is used in many common products likely encountered every day. One nearly universal use is in the filtration of liquids like the beer, wine and water. DE is also used to filter water in swimming pools, and to clean grease and oil. DE is used as an absorbent for hazmat spill control and in some kitty litters. As a filler in paint, it removes the sheen making flat paint flat; in plastics, it prevents blocking in plastic film. DE is used as an aggregate in construction, particularly in Portland Cement. And the list of specialty items that use DE for a variety of purposes is very long ….. including pharmaceuticals, cosmetics, art supplies, in the medical industry for DNA extraction, as a non-toxic insecticide, soil amendments, in bath mats for quick drying, in toothpaste as an abrasive, and as food additives to control moisture and extend shelf life. There are hundreds of other applications for DE with many more yet to be discovered!
But the biggest use of DE is in filtration. In 2023, the beverage industry paid $720/metric ton for processed food-grade DE (amount used to filter a keg of beer??). Compare that cost to $10/metric ton charged in 2023 for lightweight aggregates used in construction (wonder if or how tariffs impacted the 2025 cost?), or the $1000/metric ton charged for some specialty items.
Ideas on How to Observe Diatomaceous Earth Day
Discover more about DE, and learn about its common uses around your home or work.
Read product labels to learn what you use on a daily basis that contains DE.
Consult the fda.gov website to learn more about labeling.
Visit a Diatomite mining operation.
Learn about unmined deposits near where you live.
Use a magnifying glass or microscope to inspect the contents of bag of insecticidal DE.
Stay tuned for NATIONAL DIATOMACEOUS EARTH DAY – Part 2 – Diatoms! They are ultra-fascinating!
As always, thanks for stopping by!
1Minerals are naturally occurring, inorganic solids with a definite chemical composition and internal structure, and are the main components of rocks. DE (Diatomite) is a naturally occurring inorganic mineral that forms from the fossilized siliceous (silica-based) skeletons of diatoms, which are single-celled aquatic organisms. While the organisms themselves are organic, the hard, porous mineralized skeletons they produce are considered inorganic.
Being an inorganic mineral, DE falls into the same category as minerals we’re all familiar with, such as Quartz, Feldspar, Mica, Pyrite, Hematite, Galena, Sulfur, Gold, and Copper. The chemical formula of DE is primarily SiO2 (silicon dioxide), with traces of other minerals.
Part 3 ….. An Allelopath Declares Chemical Warfare
August 15, 2025
The more I learn about Cowpen Daisy (Verbesinaencelioides), the more the words Intrepid (fearless and bold), Interloping (meddlesome and smothering), and Impertinent (pushy and rude) come to mind.
Cowpen Daisy is literally a plant at war …..
Its adversaries are neighboring plants …..
Its weapons of choice are chemicals ….. 151 different Allelochemicals2 to be exact.
Cowpen Daisy shows no mercy to its most susceptible victims, and given the right conditions in the right locations, Cowpen Daisy can cripple ecosystems, and unravel biodiversity.
Oh No! What Have I Done! Have I unleashed a formidable enemy to run amok, bullying its way through our mostly intact biodiverse high desert ecosystem?
Maybe not! (Spoiler alert…… Allelopathy3can be bad, but I still love this happy Daisy)
On August 6th, I received an excellent question from one of my blog followers, based on my first Cowpen Daisy post :
“Do you have any concerns about this becoming an invasive plant? Best wishes, Nancy”
In reply, I expressed my concern about the number of “seedlings coming up late spring,” and how “I was definitely alarmed and wondered about the need for early control.” Fortunately, “as the season advanced, it became clear the density of plants seemed self-controlling.” Based on my limited experience with Cowpen Daisy, I explained how during the summer of 2023 “the plant completely covered an extremely large field near our home,” causing me concern about its invasive tendencies. But upon “[R]eturning the following year (2024) and again this past spring (2025) to see if the same field was blanketed again in these plants, “I couldn’t find a single Cowpen Daisy anywhere! So no, this annual [doesn’t appear to be] “invasive, at least not in central New Mexico.”
But Nancy’s question prompted me to dig deeper into on-line research. I wondered: Is Cowpen Daisy invasive outside of its native range, particularly where conditions are ideal for its aggressive growth? Yes, it is! And its invasiveness is further enhanced where neighboring plants are susceptible to the impacts of the allelochemicals released by Cowpen Daisy’s leaves, roots and decaying leaf matter in the soil.
One example where Cowpen Daisy is an introduced species and has become invasive is in India. Fields of mung bean, corn, chickpeas, and sweet melon are being outcompeted by invasive stands of Cowpen Daisies. These food crops are severely impacted by two allelochemicals released by the both roots and leaves of the Daisy; steroids and phenols. Studies of these four crops demonstrated not only “the suppression of germination and growth in these plants” but “also revealed an antagonistic effect on [their] chlorophylls, carotenoids and protein levels.” In other words, Cowpen Daisy is winning the war against India’s mung bean, corn, chickpea and melon crops, and farmers are currently engaged in a battle to develop a strategy of control and run this biological enemy out of their country.
Cowpen Daisy is only considered a native species to the Southwest U.S. and Northern Mexico. However, it has been introduced (either intentionally or by accident) and is considered naturalized in parts of Eastern North America, the Middle East, Spain, Argentina, Australia and the Pacific islands. As such, Cowpen Daisy’s nature to drop allelochemicals everywhere it grows allows it to behave like an invasive plant in countries where it is naturalized. Without diligent management (via herbicide application or mechanical control), it can thrive to the detriment of their desirable plant species’ survival.
Have I defeated my goal of reestablishing a diverse native plant community in disturbed areas surrounding our new home? “Not likely,” says I, optimistically! In addition to Cowpen Daisy, the variety of native plant species I intentionally seeded last fall and early this past spring, have germinated, grown, flowered and seeded or are in the process of flowering and seeding, most of which are adjacent to a Daisy. Of course time will tell. Meanwhile, I’ve declared this to be a happy ending to this post and my stand of happy Cowpen Daisies! However ……. next spring, if germination rates from my reseeders are low or zero, but Cowpen Daisy returns with renewed vigor, then I have a control job waiting for me. And the best advice I’ve read is to “pull out old plants and roots and selectively remove new seedlings.” That’s acceptable! That I can do!
Until then!
Do you struggle with weedy, invasive plant species in your garden or yard? Have you seen fields of blooming weeds and wondered …… “what weed is that?” Do you know the names of those pesty plants and do they seem to keep your favorite variety of cucumbers from growing? It might be interesting to learn if your local invasives are one of the many Allelopaths happily growing in our world! Let me know!
As always, thanks for dropping by!
1Cowpen Daisy is known to release up to 15 different allelochemicals2 from its leaves and roots, such as guanidine, phytosterols, phenolic acids, tripertenes, flavonoids, dicarboxylic acids, phytophenols, steroids, phenols, and others. Fresh and decaying leaf litter leach 14 of those allelochemicals into the soil.
2,3Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have beneficial (positive allelopathy) or detrimental (negative allelopathy) effects on the target organisms and the community. Allelopathy is often used narrowly to describe chemically-mediated competition between plants. Allelopathic interactions are an important factor in determining species distribution and abundance within plant communities, and are also thought to be important in the success of many invasive plants. (source: Wikipedia)
While compiling last week’s post about the happy Cowpen Daisy party taking place outside our back door, it was no surprise to find way more interesting info about this sunflower than could ever fit on my journal page. Decisions …… decisions! To keep the August 5th illustrated page relatively uncluttered, I decided to include just the botanical basics (mostly), focusing on Cowpen Daisy flowers, leaves and seeds.
Then the past week I found my nature journal wide open to a blank page, ‘begging me’ for another Cowpen Daisy entry ….. “What about all those interesting info bits?” she asked. Replying* to my journal with a hearty, “OK,” I proceeded to locate and gather my rabbit-trailing notes. This scavenger hunt reminded me just how many pages there were; so many fascinating things about the Cowpen Daisy I wanted to remember and share. Decisions …… decisions! How to keep this next post to one page? By limiting the topics to only three, was it possible?
Barely! (after some clever editing, not a single word dropped off the page)
A little bit closer view for those without a microscope!
P.S. By the way, you may have noticed I’ve indicated this post is Part 2 of what’s now become my Cowpen Daisy series. Unless I start journaling on larger than 8” x 11” paper, there’s likely to be more Parts in store. And this multi-part series resulted in a minor edit to last week’s post, not titled “One of the Happiest Sunflowers Ever! The Cowpen Daisy; Part 1 ….. Can There Be Too Many Sunflowers?” In case you missed it, please check it out here.
*Yes, you read that right; I talk with my nature journals. Don’t you? After all, we do spend quite a bit of time together!
You must awake when the first rooster crows to enjoy the floral beauty of a fully flaired Blazingstar blossom. Appropriately named, these gorgeous flowers display a radiant combination of spoon-shaped petals, petal-like stamens, and hundreds of thread-like stamens, all colored in bold sulfur yellows, distinctive pale orange-yellows, brilliant star whites, or fluorescent blues, based on species. These superbly showy flowers unfurl overnight atop tall white, branching stems that resemble candelabras with narrow lobed green leaves. These large, 2” diameter flowers belong to the Mentzelia genus, plants that are all native to the Americas, and represented by 60-80 species, most found in the desert southwest.
In 1753, Carl Linneaus gave this plant its genus name, Mentzelia, after German botanist and sinologist Christian Mentzel. (Did you know a Sinologist is a specialist in the study of Chinese language, literature, and civilization? Huh!) But perhaps more fascinating and what’s always ‘captured’ my complete attention (and blue jeans) is that the Mentzelia genus fits perfectly in the Loasaceae family ….. commonly referred to as the Stickleafs.
About those leaves ……
Being primarily a day-time hiker, my first encounter with a Blazingstar occurred simultaneously with a misstep into the plant. Noticing some resistance in making my escape, I looked down at the ground and discovered my jeans had a collection of stuck leaves from my boots on up. And the leaves were really stuck tight along their entire length! Removing those leaves was like peeling a banana, only tougher. Wait! Forget the banana peel. Removing those sticky leaves sounded like and felt like tugging on and separating Velcro! I was reminded of the familiar ‘ripping’ noise made when Velcro hooks are forcibly released from their loops!
Eureka!!
Nature is full of surprises. Were the Stickleafs the source of accidental inspiration for today’s handy hook-n-loop fastener, called Velcro? Almost, but not quite! As it turns out, the tiny hooks on Cocklebur seedpods inspired a Swiss engineer to develop Velcro in 1941. But not to change subjects too much …….The reasons Stickleafs could’ve been the inspiration for Velcro, is similar to the Cocklebur story, but, I think, even better. Here’s why ……
The seedpods of both plants have tiny hooks that readily adhere to clothing and fur. And it was the hooks’ tenacity for stick-to-it-tiv-ness that grew the original Velcro idea. But Stickleafs go even further in ‘reinforcing’ the fastener concept. Not only does the seed pod (capsule) of Stickleafs have a covering of tiny hooks, but both leaf surfaces and even the stems of plants in this family can have multiple types of minuscule grappling-hooks and barbed needles, called Trichomes, visible only with an electron microscope. I summarize that if the Swiss engineer was visiting America in 1941, and had the good fortune to walk into a Mentzelia plant, he undoubtedly would’ve been super inspired to develop Velcro. After all, it’s the leaves that stick fast to clothing, resemble a strip of Velcro, and hold tight, mimicking an ideal hook-n-loop fastener.
Hooked on Trichomes
And now for the curious nature of the Mentzelia genus. When coming across the Adonis Blazingstar (Mentzeliamultiflora) over the past 8 years, it’s been fun to inspect the leaves, remove one and intentionally stick it to Roy’s jeans or mine. I’ve then wondered how this plant ‘sticks’ so well, and why. The time for answers arrived this month, and what I learned was fascinating. It’s all about Trichomes.
Trichome is a botanical term used to describe the small hair-like structures that occur somewhere on a plant; typically on plant leaves. Trichomes can be found throughout the plant kingdom (like on Cannabis sativa); they aren’t unique to the Stickleaf family, and are found on all species of the the Mentzelia genus. Some Mentzelia species have one type or shape of trichome; some have several types. Adonis Blazingstar has two types of trichomes – one is shaped like a grappling hook; one is shaped like a barbed needle. It’s the trichomes that grab on and hold tight. But what possible function do they serve the plant? Surely a leaf sticking to the fur of a passing animal or a person’s pant leg, while decorative, is otherwise pointless?
What Good are Mentzelia Trichomes?
Like plant hairs, trichomes aid a plant in water conservation in times of drought by reducing transpiration, and in situations of other environmental stressors, such as excessive UV light and extreme temperatures. The trichomes serve as a protective barrier between the leaf, stem, or other part of the plant, and the environment.
Trichomes can function as water collection, retention and funneling structures during a rainstorm.
The grab-and-hold nature of trichomes when they attach to fur or clothing can cause enough vibration of mature seed capsules to shake loose seeds ready for dispersal.
Trichomes are the plant’s primary defense against herbivory; not from livestock or rodents intent on munching leaves, but from insects that attempt crawling amongst the grappling hooks and barbed needles intent on causing damage. As can be seen in electron microscope images, insects have been photographed speared and hooked and killed because they were unable to escape their entrapment by trichomes.
But not all insects succumb to the fate of trichomes. Aphids are able to navigate the dense forest of hooks and needles without capture, allowing them to wreak havoc on vulnerable and tasty leaves, stems and seed capsules.
And that’s why the Mentzelia genus of the Stickleaf family is one of the natural curiosities of the plant kingdom. Maybe now, you too, are Hooked on Trichomes?
I hope you’ve enjoyed this post, and do thank you for stopping by!
And if you’re curious about how Trichomes contribute to the enjoyment and/or medicinal benefits of marijuana (Cannabis sativa), here’s what I found:
Trichomes are the primary site for cannabinoid production (i.e. compounds like THC & CBD responsible for the plant’s psychoactive/therapeutic effects.
Trichomes are the site of terpene production which gives different Cannabis strains their unique aromas/flavors.
Trichomes are the site of flavonoids known for antioxidant and medicinal properties.
What a whirlwind celebration! Sketchbook Revival (SR) 2025 Binge Fest was so much fun. And Wow! Two jam packed weeks of creativity was over in the blink of an eye!
Karen Abend, SR creator, host extraordinaire, and wonderful artist, came up with a brilliant idea for the SR 2025 session. I would swear the creative gears inside her head were spinning with delight as she declared, “Yureka! I’ve got it!”
Beginning on May 27th thru June 9th, Karen generously opened up the SR historic vault and set free all of the workshops conducted the first 5 years of SR (2018-2022)! That unbelievable offering came to more than 130 one-hour-long workshops of inspiring, hands-on, and creative play time all instructed by well-known experts in artistic fields associated with Sketchbook Journaling.
Challenge presented ……. Challenge accepted.
Since I’ve been participating in SR each year since 2018, and attended most of these workshops in the past, my goals and strategies to tackle the challenge were these:
Complete a minimum of 4 workshops daily;
Two workshops should involve a project outside of my comfort zone, such as portrait drawing, fantasy, word play, collage, and properly stitching my own SR sketchbook so it wouldn’t fall apart during the 2-week challenge, etc.;
Two workshops should involve projects within my comfort zone, such nature subjects, urban sketching, whimsey, and lettering, and those using watercolor pencils, graphite, and ink;
Develop fresh, interesting, and imaginative sketches during the workshops;
Allow Flambé to play along;
Slow down, breathe, and enjoy the 2-week marathon without becoming overwhelmed;
Recognize and gather take-away tips and techniques to bring into my Nature Journaling practice and Zentangle storytelling.
Keep sketching and sharing.
After two weeks of play, I was able to fill up my handmade and successfully stitched SR 2025 sketchbook! With a total of 46 pages completed (doubling up workshop projects on a handful of pages), including several pockets with inserts, I was pretty happy (and a bit exhausted).
If you’ve participated in SR in the past, or maybe took on the 2025 challenge as your first time, you know how intense (in an exhilarating way) it can become. If not, and would like to learn more, check out this link
This link will take you to Karen Abend’s website where you can ask for more information about Sketchbook Revival. https://karenabend.com
Hope my collection made you smile and laugh! I certainly got a kick out of the experience.
Well, until Sketchbook Revival next year, thanks for coming along!
Front and back of the concertina book that tucks into the pocket above.My hand sewn, one signature SR 2025 Sketchbook.
Such an awesome-inspiring place to spend a Spring week in New Mexico!
Three of the five big boys! Rocky Mountain Big Horn Sheep.
Rio Grande del Norte National Monument …..
comprises a breathtaking 245,000 acre area of the northern Rio Grande rift valley in north central New Mexico. Established as a Bureau of Land Management (BLM) national monument in 2013, the rugged wide-open plains average 7,000 feet in elevation before dropping into steep narrow canyons carved into the landscape by rivers that have been flowing for millennia.
The confluence of two of these rivers, the Rio Grande and the Red River, occurs in the northern Wild Rivers area of the Monument. It’s at this confluence where the gorge is its deepest at 800 feet, and its widest from rim to rim measuring 3/4 mile. It’s an impressive view from the la Junta (“the Meeting”) Overlook. All of the views from anywhere along the rim are impressive.
We backed our RV (‘Felix’) into what must’ve been the best designated camping site ever ….. #9 on the southern loop in Big Arsenic Springs Campground. After setting up, we discovered that Felix rested only a few steps west was the rim and the long plunge down to the Rio Grande! But immediately south of us, the rim formed a small peninsula where nearly every afternoon I could be found sketching the plants growing from the basalt cliffs, or the swifts and turkey vultures soaring along the cliffs and over the river aided by the canyon’s updrafts. This skinny little peninsula quickly became my favorite sit spot; then late one morning it became priceless …….
Can you spot our RV? We were precariously perched above the Rio Grande, right on the rim of the gorge!
I could hear them approaching, like a swarm of bees. In a matter of seconds I was witnessing a cacophonous chorus of 100’s of pinyon jays. These noisy birds quickly moved in and onward while descending, like they were famished, on this year’s piñon pine cone-laden trees in large erratic groups, all the while screaming, “Hurry, Hurry, Hurry, Hurry!” Where exactly they came from or where they went remains a mystery. All I know was the spectacle must’ve lasted a good 10 minutes or more, as I watched wave after wave of these birds pass by. I still get goosebumps (jaybumps?) recalling those exciting moments.
We had planned to spend only one day camping in the Monument, but every morning we decided to stay at least another and then another day. We hiked every rim and interior trail (sometimes more than once), spent hours at all of the Overlooks getting ‘High on the Views,” were thrilled with our chance encounters of five (5) Rocky Mountain Big Horn Sheep rams (twice in one day), and marveled at how the forces of nature* collaborated to carve the narrow and steep 800 foot deep gorge within the Monument.
But alas, it became time to pack up our home away from home. Even tho a string of completely clear days allowed sun to shine on our solar panels from sunup to sundown, keeping Felix’s battery purring happily our entire stay, it did nothing to recharge our potable water tank. So the morning we found the water indicator light teetering on ‘Empty,’ was the day we headed for home (after enjoying a farewell hike, of course) with my nature journal full of sketches and memories for a lifetime!
Do you have an especially special place where you can spend time in nature? Please share your discovery and what makes it so awesome!
As always, thanks for stopping by!
*Geology 101
From the overlooks throughout the Monument, we could see stacks and stacks of basalt and ash lining the narrow canyon walls of the Rio Grande Gorge. It’s hard to imagine the volume of material deposited during two very active periods of volcanic activity that occurred 5 and 3 million years ago. Soon after these events, water moving through the major drainage in the area (today’s Red River) began eroding pathways into these deposits as it flowed downstream into the 10-16 million year old rift valley. Geologists refer to the ancient Red River drainage as the ‘original Rio Grande’ because the still-closed San Luis Basin to the north (in south central Colorado) would not overflow for a few million years. Then 400,000 years ago, coinciding with a change in climate resulting in an overabundance of snow and rain, the San Luis Basin filled and spilled. As water does so well, this new and powerful river, today’s Rio Grande, moved ‘downhill’ towards the ‘original Rio Grande’, cutting through everything in its path (including the ancient volcanic deposits). When it converged with the ‘original Rio Grande,’ the erosive force of both rivers became enough to eventually carve out an 800-foot deep gorge in the Rift.
Confluence of the Rio Grande and Red RiverSunset on basalt cliff
On a warm Spring morning, wandering around a grove of American Sycamore, I became curious about these magnificent trees: where in the US are they native; why are some leaves larger than the palm of my hand and some half the size; what about those odd pingpong sized seedballs lying on the ground everywhere you look ….. why don’t they roll away in search of an ideal spot to pop open so the seeds can germinate …… when the seedballs are kicked, stepped on or crushed beneath a car tire, do the 1,000’s of seeds inside blow away to sprout ….. are the seeds (all or some of them) even viable ….. do the seedballs make a good ink or dye or maybe they’re edible or even medicinal……. what, if any wildlife species eat the seedballs or seeds; and ooooohhhhhhh, sycamore bark! Why does this tree’s bark flaunt a pastel palette of greens, yellows and pinks. These and many more questions came to mind that it seemed about time the American Sycamore became a subject for my nature journal, until ……………..
There! In the tree above my head, I spotted a most curious thing. Parting a few of that sycamore’s beautiful Spring green palmate-shaped leaves was a bundle of dead brown and beige leafy bits and sticks all haphazardly glued together. Wishing to get a closer look at that elongated ornament shaped “thing,” I found it was securely suspended from a branch. Trying to puzzle out this fascinating mystery while searching for my pen knife, a stiff breeze blew through the tree. It was then a I noticed hundreds of those 2-3” long bundles all over the tree; from the base to its crown!
Curiosity is the Essence of Nature Journaling
What continues to draw me to nature and nature journaling after so many years are the surprises in the familiar and in the unknown. I know well enough that new encounters in nature are infinite; you just have to open your eyes and look. Having learned by carefully observing what appears to be familiar, often leads to new discoveries. That’s when my curiosity kicks into high gear ….. when it’s time to engage in some serious poking around to figure something out; to learn what the “thing” is.
Curiosity, for me, is the very heart and soul of nature journaling. The ‘art’ of curiosity even precedes skill in observation. It’s what drives me out the door in the morning and fuels my exploration. Curiosity fills the mind with countless questions if for no other reason but to develop a deeper understanding of the natural world.
But I “wax philosophical.” Needless to say, my curious discovery on that warm and breezy Spring morning prompted an abrupt change of mind for my next blog post (this post). Anxious to learn about the “thing” suspended from a tree branch, probably minding its own business, I proceeded to cut it down (along with two more) and popped them in a bag along with a few sycamore leaves and seedballs.
Later that same day …….
Upon completing my journal sketches of sycamore leaves and seedballs, and posting a few photos to iNaturalist for an initial ID, it was time to take a closer look at my discovery. Reaching into the bag for one of the “things” (wiping my hand free of spider webbing?), I placed it on my examination table surrounded by several hand lenses, a larger magnifying glass, a penknife, and 2 pairs of tweezers. Before beginning the dissection, I noticed about a dozen black pepper-sized bits moving about the “thing.” Thinking tiny spiders had come from the bag, I didn’t give them a second thought (should’ve been curious!).
This bagworm bag was the subject of my dissection. Notice the pepper-sized black dots next to the bag ….. those are wiggling 1st instar larva.
iNaturalist ID Pick :::::::::::::: BAGWORM MOTH ::::::::::::::: iNaturalist ID Pick
(awaiting genus/species ID)
A Bagworm Moth!
How cool is that!?!
The opened bag of a female Bagworm moth. She’s very dead, but her progeny are escaping as fast as they can.
Dissection resumes ……
After finding out the “thing” I’ve been pondering over is the Bag of a bagwormmoth, I learned the Bag was built during last Spring, Summer and Fall by either a male or female bagworm moth. If a male, the Bag would be empty; if a female, the Bag would contain her remains …. she would’ve died last fall after a male fertilized 500-1,000+ eggs she overwintered inside her body until Spring when newly-hatched larvae would emerge from the bottom of the Bag and begin the species’ life cycle all over again.
The Bag, that took about 10 minutes and all my dissection tools to open, contained the black and mushy remains of a female and 100’s of wiggling/dancing larvae! They were on the move; escaping from the now wide open Bag, and quickly covering my examination table like a pepper grinder out of control.
And my effort to open the Bag? This made sense after reading about the high tensile strength of the silk they produce. These thin strands of silk, 10x stronger than that produced by silkworms, is used in abundance to construct their Bags.
The coolest thing ever! Notice the either late 2nd or early 3rd instar larva, no longer naked, but swaddled in very chewed up leafy bits glued together with strong silk. This dude was hiking up a sycamore branch, continually chewing, wiggling, and gluing.
After disposing of all the naked 1st instar larvae waggling and dancing across my examination table, I placed the dissected Bag, the two whole Bags, and collected leaf material into a clear plastic ziplock to observe what would happen. Over 10 days, the number of larvae multiplied and the naked 1st instar caterpillars grew in size (at least to 2nd instar) while building their individual Bags from tiny bits of leaf litter! Their wiggling dance seemed to be the way their silk strands wrapped and secured leafy bits around their bodies. It’s been fun to watch all the activity.
Have you ever encountered one or more of the 1,350+ species of bagworm moths? What materials were their Bags made from? Please share your experience with these fascinating members of the butterfly/moth family of insects.
When the urge to nature journal is too hard to resist, but everything around you is still brown, crispy and covered in dust, I begin looking for any curious phenomena suitable for rabbit trailing (even rabbit tracks work!). The other day while hiking a steep hill, I was looking for sign the oaks were close to breaking bud. Spotting a string of little dark red beady objects lining many of the mostly leafless stems of am oak was certainly encouraging. From a distance they appeared to be swelling leaf buds; at least their color seemed right. But an up-close inspection revealed my hopeful find as last December’s vacated “homes” occupied by oak gall wasp larvae. Having never seen this species of stem gall before, naturally this would be a perfect most curious phenomenon to tackle. And that’s just what I did!
The Honeydew Gall-Wasp Gall
Arriving back home with a small collection of oak stems crowded with tightly packed galls (resembling miniature bread loaves), my work began. Assuming the host oak was a Gambel’s (Quercus gambelii), I began my search of stems galls on that species. Carefully scouring the literature the genus appeared to be Disholcaspis, but none of the species seemed a good match. So after many days in quandary, I consulted my favorite oak gall ID specialist, firing off a lot of questions, written descriptions and photos. Patiently awaiting his reply, I continued to find more resources to review. Gall wasps have a complex life cycle, and their galls are a challenge to identify.
After 2 weeks a welcome reply arrived from the specialist. Boy did I feel silly, knowing I should’ve known better! The oak host was not a Gambel’s but a cross between Gambel’s and Shrub Live Oak (Q. turbinella) which produces a hybrid called Wavyleaf oak (Quercus x undulata). Correcting my mistake was key to identifying the stem gall! Picky little wasps, huh? Happy the specialist agreed the genus is Disholcaspis, the obvious species responsible for the gall was turned out to be D. spissa; the Honeydew Gall-Wasp ….. making my discovery the Honeydew Gall-Wasp Gall!
Lesson Relearned
When nature journaling, despite how excited you may be to find answers, it’s always, always best to slow down, breathe, carefully observe, ponder, question, make connections, and enjoy the journey ahead of the destination!
Some Gall Descriptions and A Prize!
Outside appearance: Young galls of this wasp are yellowish and hairy. Mature galls have beige-brown to weathered grey sides, are black on top, and have a dull matte surface. They can have a round to ovoid to a rectangular ‘bread-loaf’ like shape. Texture appears mealy-granular. Galls sit snugly directly on the stems (sessile), and singly or in clusters of long compact chains that form all around the stems of host oak species.
Inside the gall and back outside again: Each gall has one thin walled cell or chamber (known as monothalamous) that sits above the bottom of the gall. This is the larval chamber and is imbedded in dense cellular tissue that becomes a pulpy flesh with age. While the larvae are actively feeding and growing, they produce a copious amount of sticky-sweet honeydew that accumulates on the top of the gall. All of this honeydew attracts hordes of hungry ants and yellowjackets. The ecological importance of these secretions is unmistakeable; it provides a high energy food source for the insects. And while the ants and yellowjackets feed, they inadvertently protect the gall, like little bodyguards, from parasites and predators intent on infecting or eating the growing larvae inside. And another interesting ecological thing ….. the reason the tops of the galls are black and not the same color as their sides, has to do with a fungus called black sooty mold. The sugary secretions produced by the larvae accumulate in quantities too irresistible to the sooty mold. Colonies of the fungus develop rapidly on the honeydew giving the gall tops a dusty or powdery black color. So honeydew is the perfect medium for black sooty mold to complete its life cycle.
What about that Prize? Read on to learn more! Close-up inspection of the galls I collected, and there were about 25, revealed all but one had a single exit hole in a side just below its crusty red-black top. I learned the adult wasps emerge from these stem galls by late December; sometimes waiting for warmish temps until mid January. What happened to the adult wasps in the one gall without an exit hole? Because the gall had a sooty top, implying the larvae had been eating, growing and secreting honeydew, maybe the larvae died at some point or failed to develop into an adult? Had to know! Cutting the gall to find out wasn’t easy. The outer crust fell away first, then using steady knife pressure on the punky innards, the gall popped open, like a box of ‘Cracker Jacks!’ And there, near the bottom of the package, was a single sealed chamber. Carefully I was able to tease out the contents with fine pointed tweezers until out blurped the Prize! An intact cream colored gooey looking larvae, followed by a small puddle of viscous liquid. Even though the larvae filled up most of the chamber, there wasn’t any sign it was alive. And after an hour, when there still wasn’t any movement …. well, darn, I felt he must’ve died sometime before morphing into adult form. But peeking inside the gall did answer the question about the absence of an exterior exit hole.
And now an interesting note about these types of cynipid oak gall wasps: On my diagram, I used the term ‘agamic’ which is a formal label included with the genus/species name (i.e. Disholcaspis spissa ‘agamic’). This means these wasps have an asexual all female population that emerges from galls in late fall/early winter to lay fertilized eggs without needing to mate with males. Then a bisexual generation follows where adults emerge from galls in late winter/spring/early summer. This is the typical 2 generation annual life cycle of cynipid gall wasps, where the galls developed from each generation usually look very different and even occur on different parts of the host plant (on stems vs leaves). It’s interesting that nothing is known about the bisexual generation of D. spissa, but the asexual generation is common, well documented and abundant.
Known host oak species for D. spissa: Look for these galls on Shrub live oak (Quercusturbinella), Wavyleaf oak (Quercus x undulata), Mexican blue oak (Q. oblongifolia), Arizona white oak (Q. arizonica), and Shinnery oak (Q. havardi).
Hope you found my post interesting. Have you ever been curious enough about plant galls to look inside? Recalling the first time I saw a gall, I had no clue what it was and why it was precariously clinging to a plant leaf. It was round and hard, and reminded me of a tiny rusty red ping-pong ball. Was there something inside? Would it be squishy, alive, have teeth and bite, or perhaps whatever it was was dead and oh so smelly? Maybe it was some weird kind of flower bud, or a fruit lost under the leaf? Despite being a bit nervous, I needed to know what, if anything was inside. So I cut it in half, and in the center of the ball, suspended on hundreds of delicate threads, was a tiny, wormy creature twisting and turning and wriggling to music only it could hear! That was over 45 years ago, and to this day I still find galls irresistible!
As always, thanks for stopping by!
A Few References
Russo, Ronald A.: (2021) Plant Galls of the Western United States, section on tree galls; oak galls of the SW, page 173.
a curious nature 