A foliose lichen, P. crocata has a tan or brownish thallus (lichen body) with small reticulate ridges on the upper surface. On the ends of the lobes of mature specimens, round patches of bright yellow soredia (powdery granules of algae and fungus) can be found. The middle layer of the thallus is mostly white, with some shades of yellow in spots. The lower surface has a somewhat furry appearance, with occasional small, yellow pores scattered about. Apothecia (fruiting bodies) are rarely seen. The algae associated with this species is blue-green (Wetmore 1981; Brodo et al. 2001).
This species reproduces asexually through the dispersal of soredia, which contain both fungal and algal components of the lichen. Dispersal methods are unknown, but soredia are most likely dispersed by wind. Transfer by other dispersal agents such as insects or other animals, is possible as well.
Pseudocyphellaria crocata is found in habitats that are moist, shady, and often foggy. Substrates for this lichen are varied, including mossy rocks and a variety of trees, in this area preferring the Nothofagus genus.
When found on trees, this lichen usually occurs 9-12 dm (3-4 ft.) above the ground and is at least partially shaded by the tree on which it is growing.
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