Eriophorum viridicarinatum |
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bog cottongrass, green-keel cotton-grass, green-keel cottonsedge, linaigrette verte, tassel cottongrass, thinleaf cottonsedge |
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Habit | Plants cespitose or single-stemmed. |
Culms | 20–90 cm × 0.9–1.2 mm distally. |
Leaves | blades flat, trigonous in cross section distally, to 30 cm × 2–6 mm; distal leaf blade much longer than sheath. |
Inflorescences | blade-bearing involucral bracts 2–4, sometimes brown-tinged proximally, leaflike, to 7 cm. |
Spikelets | 3–30, in subumbels, lax, oblong-ovoid, 6–10 mm in flower, 15–30 mm in fruit; peduncles (2–)10–60 mm, scabrous; scales dark green to gray, pale proximally, darker distally, ovate to lanceolate, 4–6 mm, margins scarious 0–0.1 mm wide, to 12 weak lateral ribs, midrib prominent, enlarged distally, reaching tip, sometimes excurrent, apex acute. |
Flowers | perianth bristles 10 or more, white to pale brown, 15–25 mm, smooth; anthers 0.8–2 mm. |
Achenes | dark brown, narrowly obovoid, 2.5–3.5 mm. |
Eriophorum viridicarinatum |
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Phenology | Fruiting summer. |
Habitat | Marshes, meadows, bogs, fens, wet woods |
Elevation | 0–2000 m (0–6600 ft) |
Distribution |
AK; CO; CT; IA; ID; IL; IN; MA; ME; MI; MN; ND; NH; NY; OH; PA; RI; VT; WI; WY; AB; BC; MB; NB; NL; NS; NT; ON; PE; QC; SK; SPM
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Source | FNA vol. 23, p. 23. |
Parent taxa | Cyperaceae > Eriophorum |
Sibling taxa | |
Synonyms | E. latifolium var. viridicarinatum |
Name authority | (Engelmann) Fernald: Rhodora 7: 89. (1905) |
Web links |