Dahlia #flower – #learn 2 #grow #dahlia http://www.growplants.org/growing/dahlia
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NASA
we're not kids anymore.

祝日 / Permanent Vacation
YOU ARE THE REASON

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Kaledo Art
let's talk about Bridgerton tea, my ask is open

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Claire Keane
Aqua Utopia|海の底で記憶を紡ぐ
Not today Justin
Three Goblin Art
Monterey Bay Aquarium
Today's Document
$LAYYYTER

Andulka

tannertan36
sheepfilms

Origami Around
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@magicalmacrocosm
Dahlia #flower – #learn 2 #grow #dahlia http://www.growplants.org/growing/dahlia
ダリア 「ブラックエッグ」 Dahlia ‘Black Egg’
Plant collecting trip in Tibet, 2009.
Pedicularis groenlandica (Scrophulariaceae)
“Elephant’s head” is a close relative of Pedicularis racemosa (featured in a previous post). It is found in moist, sunny, openings in the mountain forests. This species is also a root parasite, gaining nutrients from the roots of other nearby plants.
Parasitism in plants is a spectrum. What I mean by this is that the ways in which plants have evolved a parasitic lifestyle ranges from somewhat parasitic to entirely parasitic. The lines are blurred and as time goes by I am sure that research will reveal even more examples. However, since I already talked about a plant that was fully reliant on a parasitic lifestyle, I would like to discuss some that are only partially parasitic. Meet Pedicularis groenlandica or, as the flowers may suggest, elephant’s head! This is probably one of my favorite western species. Seeing it in person is quite an experience. It is native to the western U.S. and most of Canada. This member of the broomrape family, Orobanchaceae, is what we call a hemiparasite. Hemiparasitism is a type of partial parasitism. The plant does produce fern-like leaves that do undergo photosynthesis but by using specialized root structures called haustoria that grow into the roots of other plants, hemiparasites can obtain nutrients that way. Houstoria do not grow into the cells of other plants, instead they weave their way in between the cells, which, to me, is quite interesting. It is worth noting that, to the best of my knowledge, all members of the broomrape family are parasites on some level. Many take it to the fullest and do not produce any of their own chlorophyll while many other genera are hemiparasites like elephant’s head. Parasitism in the plant world is a fascinating topic of study. How and why the varied strategies evolved separately over many different families is a fun mystery. Enjoy these plants in the wild as the are incredibly difficult to establish from seed in a garden setting. If anyone has had success in germinating and growing these species, please chime in!
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Pedicularis oxycarpa, Yunnan, China, 2011.
Live oak near Hahnville, Louisiana. Trees, the yearbook of agriculture. 1949.
A rather enormous coppiced oak near Ipswich, Suffolk.
Carl sagan <3
QUERCINE
[adjective]
of or pertaining to an oak.
Etymology: Latin querc(us) - oak.
[Natalie Mikaels]
These breathtaking gray wolves were eradicated from Yellowstone National Park with the decline of the Aspen tree. What park rangers soon realized was how much the ecosystem was changing since they left. Once the fierce predators were gone, the elk began to dominate the park and feed on baby Aspen trees, a North American tree. Rangers reintroduced the gray wolves to stabilize the dangerously increasing Elk population.
Aspen Eyes Pt. III (on Flickr) by Marisa Renee
The Forest by Chad Galloway
The Clearing (Edge Of The Wood) - Paul Ranson
Merced River, 1960s.
The Rebirth
By Caleb Dial