When: 2008-11-23

Collection location: Larch Mountain, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

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Proposed Names

40% (2)
Recognized by sight
18% (2)
Used references: Mosses, Lichens and Ferns of Northwest North America, by Vitta, Marsh & Bovey.
70% (1)
Recognized by sight: Pale gray thallus forming a rounded cushion of narrow branched lobes that are curved inward (the two sides of each lobe curve toward one another); lower surface white at the tips; no isidia or soredia; some faint white maculae; some edges browned; lower surface blackish in the center
Used references: Brodo et al. 2001 (the Platismatia key in this book treats all accepted North American species)

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= Observer’s choice
= Current consensus

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