Eriophorum brachyantherum

Trautvetter & C. A. Meyer

in A. T. von Middendorff, Reise Siber. 1(2, 3): 98. 1856.

Common names: Closed-sheath cotton-grass linaigrette à anthères courtes
Illustrated
Synonyms: Eriophorum opacum (Bjørnstrom) Fernald Eriophorum vaginatum var. opacum Bjørnstrom
Treatment appears in FNA Volume 23. Treatment on page 27. Mentioned on page 22, 26.

Plants cespitose. Culms terete or nearly so, 20–70 cm, smooth. Leaves: bladeless sheaths 1–3, evenly distributed on culm, distal to middle, not inflated distally, filiform, channeled, 0.4–1.2 mm wide. Inflorescences: involucral bracts absent. Spikelets solitary, erect, globose, 10–20 mm in flower, 20–35 mm in fruit; proximal empty scales usually 7 or more, ascending, blackish, ovate-lanceolate, 5–10 mm, thin, margins broad, ribless, midrib not reaching tip. Flowers: perianth bristles usually more than 8, creamy white to pale brown, 10–20 mm; anthers 0.5–2 mm. Achenes oblanceoloid, (1.8–)2–2.3(–2.7) × 0.5–1.2 mm; apex minutely apiculate, 0.1 mm. 2n = 58.


Phenology: Fruiting summer.
Habitat: Bogs, fens, tundra, muskeg, wet soils
Elevation: 0–1500 m

Distribution

V23 33-distribution-map.jpg

Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Eurasia.

Discussion

Eriophorum brachyantherum var. pellucidum Lepage is ca. 30 cm with narrowly oblong achenes (2.5–2.7 mm). It is known from only a single station (Rupert House, Quebec) and may be a hybrid between E. brachyantherum and E. vaginatum subsp. spissum. Further study is needed to determine the status of this plant.

Selected References

None.

Lower Taxa

None.
... more about "Eriophorum brachyantherum"
Peter W. Ball +  and Daniel E. Wujek +
Trautvetter & C. A. Meyer +
Closed-sheath cotton-grass +  and linaigrette à anthères courtes +
Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +  and Eurasia. +
0–1500 m +
Bogs, fens, tundra, muskeg, wet soils +
Fruiting summer. +
in A. T. von Middendorff, Reise Siber. +
Illustrated +
Eriophorum opacum +  and Eriophorum vaginatum var. opacum +
Eriophorum brachyantherum +
Eriophorum +
species +