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#botany

30 posts25 participants6 posts today
Public
Bob Tregilus

Another shot of the evolutionary lab in Tikaboo Valley, CA, where Yucca brevifolia (joshua tree) is adapting to climate change. The bushy western- & the thin eastern variety are hybridizing here & moving north. Y. brevifolia's pollinator is Tegeticula synthetica (yucca moth) & 13k years ago its seeds were distributed far & wide by Nothrotheriops shastensis (giant Shasta ground sloth). Now, tiny animals distribute the seeds locally.

A black and white landscape photo showing thick short dry shrubs that cover the landscape. Tall tree like plants with long trunks and large knobs of spike like leafs frame either side of the photo and are numerous in the distance. A tall mountain range is seen in the distance. The sky is dark and cloudy and the clouds cast bands of shadow on the distant mountain range.
#ClimateChange#Desert#Botany
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Bob Tregilus

In a high crevice of this mountain in the Kofa Nat Wildlife Refuge, Arizona, grows an isolated grove of Washingtonia filifera, the only native palm in the Western US. Sadly, all of the palms you see in the cities like LA & Las Vegas are cultivars imported from other parts of the world. There's only a few small groves of W. filifera left growing in the wild as it has been when it was much wetter during the ice ages. See alt-text for more.

Color landscape photo of a small range of mountains in the late afternoon. In the foreground is a desert landscape dotted with various bushes and many cholla cactus, a cactus that stands about 4-5 feet tall and is very thorny. The mountain range is about two miles away and is a rugged outcrop of rock with a canyon on the left that is in shadow. In one of the narrow crevices far up the canyon on the left side the palm trees grow that are mentioned in the topic of this toot. The sky is clear and blue. The late afternoon light casts a warm golden glow on the landscape.
A portrait view looking out from high in the crevice where the palms grow in the mountain range down to the canyon floor. It's a narrow "U" shape looking down at a steep angle. There are a few bushes in the crevice. The sun shines of the opposite canyon wall on the other side of the main canyon.
A portrait photo showing the small grove of palms in the crevice where they grow. There's maybe twenty trees. The photo is manipulated so the trees are in focus and standout due to the deep shadow of the crevice. The crevice walls are soft, desaturated, and out of focus.
A square photo showing the top of one of the palms in the lower right and a woody shrub in the upper left. I tried to climb up the crevice to where the grove of palms were but this was as close as I could get. A rather large smooth nearly vertical rock stopped me. My old body didn't allow me to navigate the sparse hand- and foot-holds. Getting old sucks.
#Botany#Mountains#Desert
Public
Project Gutenberg

Defying classification, fantastical artworks reframe the racism of Carl Linnaeus

In the 18th century, the Swedish biologist Carl Linnaeus set out to classify life, creating a system of taxonomy that still endures. But, as Firelei Báez explains, his work included hierarchies of humans based on race that were ‘sheer nonsense’, embedding racist ideas into science that echo to this day.

aeon.co/videos/defying-classif

Carl Linnaeus at PG:
gutenberg.org/ebooks/author/95

Linnaeus: Örtaboken (Herb book), early manuscript by L., 1725. "Earliest manuscript by L." The image shows Örtaboken (“The Herb Book”), the earliest known manuscript by Carl Linnaeus, created in 1725 when he was still a young student. The page, yellowed with age, is filled with neat, handwritten text in dark ink, written in Swedish and Latin. Botanical names and descriptions are carefully arranged, often accompanied by delicate ink or pencil sketches of plants, leaves, or flowers in the margins. https://commons.wikimedia.org/wiki/Category:Carl_von_Linn%C3%A9#/media/File:Linnaeus_-_%C3%96rtaboken,_early_manuscript,_1725.jpg
#biology#botany#zoology
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