Ribbon Rag Lichen - Platismatia stenophylla
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Known from a few locations in western Montana.
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Ribbon Rag Lichen (Platismatia stenophylla) Conservation Status Review
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Thallus foliose, bushy erect, to 10(15) 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 McCune and Geiser 2009
. Chemistry: cortex K+ yellow, medulla K-, C-, KC-, and P- McCune and Geiser 2009
The elongate, narrow, erect lobes lacking soredia and isidia are diagnostic. P. herrei can be similar, but bears isidia McCune and Geiser 2009
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.
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Generally on conifer bark and wood in low elevation, mesic forests.
Reproduces sexually by spores from the apothecium.
Threats or Limiting Factors