lichenaday:Punctelia stictica Lichen fact: lichens don’t get goosebumps. Figured I’d m
lichenaday: Punctelia stictica Lichen fact: lichens don’t get goosebumps. Figured I’d mention that, since you might think so while looking at P. stictica. No, those little bumps allover the thallus surface are pseudocyphellae–holes in the outer cortex where the inner medullary layer made up of fungal hyphae is visible. These pores are thought to help with gas exchange, and are an ID characteristic for lichens in the Parmeliaceae family. This particular porous pal can be found growing on rocks in temperate to boreal habitats all over the world. images: source | source | source | sourceinfo: source | source | source -- source link
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