#Pseudosagedia

[lichenaday]

Pseudosagedia guentheri

Is that tar? Mud? Old gum? No silly, it’s a lichen! A symbiotic association between a fungi and an algae! That’s a whole ecosystem you are looking at, so show it some respect! P. guentheri is a crustose lichen with a dark gray, brown, or green thallus and black perithecia. It grows on siliceous rock near water in montane, subalpine, and subarctic habitats. And why does it look like this, when some lichens get to look, well, flashier? Well it grows on rocks that are frequently inundated with water, and so having a smooth thallus that water can’t erode is a must! And that dark coloration likely helps it respond to the light and desiccation changes brought on by drying. So it looks perfect for exactly what it is. 

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Pseudosagedia cestrensis

You know, I want to give each lichen its day. I mean, that's what the blog is about. And I want to present each of them the best I can so you all can fall in love with them. But like, even the experts refer to the thallus of P. cestrensis as "dull" and "superficial" and "brownish." Not even brown--brown-ISH! So like, what am I supposed to say? I don't know man, she's still glorious. Love her, dammit!

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Pseudosagedia aenea

You know when you’re little and you’re really self-conscious about your moles/freckles/birth marks, so grown-ups refer to them as like, angel kisses or beauty marks or whatever to make you feel better? Well I honestly feel like lichens are the beauty marks and angel kisses of the natural world. Just adding a beautiful splash of magic to an otherwise plain surface. Just look at the cute little spots left by P. aenea! Aren’t they gorgeous? This crustose lichen forms small delimited patches made up of a continuous, semi-immersed thallus. It has a dark gray or dark brown surface dotted with semi-immersed, black perithecia. P. aenea grows on the bark of oak trees in temperate forests in the Northern Hemisphere. 

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