Eriophorum chamissonis
russet cottongrass
somewhat trigonous; (20)30–70(80) cm; stout; to 1.5(4) mm thick basally.
blades filiform, trigonous-channeled; (2)3–10 cm × 1–2 mm;
distal 1–2 leaf sheaths bladeless.
involucral bracts absent.
1; floral scales blackish to purplish brown;
proximal 1–7 scales empty, obovate or trigonous-obovate, 4–20 mm;
margins white or paler; as wide as dark portion;
apex blunt;
distal scales obovate to ovate-lanceolate;
margins hyaline, 1 mm wide or wider.
perianth bristles 20–40 mm, red-brown to white;
anthers (0.6)1.5–3 mm.
oblong-obovoid, 2–2.7 mm; as wide as long.
=58.
Eriophorum chamissonis
Coastal bogs and marshes. 0–50 m. Est. ID, WA; north to AK, east to WI, southeast to CO; Eurasia. Native.
Eriophorum chamissonis is a lovely plant with large, shiny, dense heads of long, red-brown or bronze hairs.
Barbara Wilson, Richard Brainerd, Nick Otting
BC
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
