Platismatia stenophylla Lichen

Wildflowers Found in Oregon

Platismatia stenophylla Lichen

Platismatia stenophylla Thallus foliose, bushy erect, to 10 cm broad; lobes mostly 1-2(3)mm broad (occasionally broader in the basal parts); upper surface whitish, grayish, pale greenish gray, or browned in exposed sites; lower surface black, brown, white, or with patches of these colors; rhizines few; isidia and soredia lacking; pycnidia dark, marginal; and apothecia common. The elongate, narrow, erect lobes lacking soredia and isidia are diagnostic. P. herrei can be similar, but bears isidia. This lichen occurs from southern British Columbia to California, and is common in the West Cascade Mountains of Oregon to Washington, with rare inland disjuncts to western Montana.

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