Eriophorum chamissonis |
Eriophorum brachyantherum |
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russet cottongrass |
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Culms | somewhat trigonous; (20)30–70(80) cm; stout; to 1.5(4) mm thick basally. |
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Leaves | blades filiform, trigonous-channeled; (2)3–10 cm × 1–2 mm; distal 1–2 leaf sheaths bladeless. |
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Inflorescences | involucral bracts absent. |
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Spikes | 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. |
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Flowers | perianth bristles 20–40 mm, red-brown to white; anthers (0.6)1.5–3 mm. |
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Achenes | oblong-obovoid, 2–2.7 mm; as wide as long. |
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2n | =58. |
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Eriophorum chamissonis |
Eriophorum brachyantherum |
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Distribution | ||
Discussion | 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. |
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Source | Flora of Oregon, volume 1, page 244 Barbara Wilson, Richard Brainerd, Nick Otting |
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Sibling taxa | ||
Web links |