Key to Species: 18
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Racomitrium occidentale; Slagle Creek, Jackson Co., Oregon. DHW 9488a.
18a Costa with abaxial grooves and low ridges (must make sections to see clearly); grooves present in the distal half of most leaves; relatively pale olive green; frequent if not common
Racomitrium occidentale (Ren. & Card.) Ren. & Card.
Racomitrium sudeticum; Cherry Peak, Klamath Co., Oregon. DHW 8117.
18b Costa smoothly rounded abaxially in section, usually convex, not grooved or ridged except sometimes in the lowermost (basal) part of leaf; often dark green, blackish, or dark reddish-brown
Couplet 19
Guide to Racomitrium of Oregon
Created 2007 Northwest Botanical Institute