Eriophorum vaginatum

Linnaeus

Sp. Pl. 1: 52. 1753.

Common names: Tussock cotton-grass linaigrette à large gaine
Illustrated
Synonyms: Eriophorum spissum Fernald Eriophorum spissum var. erubescens (Fernald) Fernald Eriophorum vaginatum subsp. spissum (Fernald) Hultén
Treatment appears in FNA Volume 23. Mentioned on page 26.

Plants cespitose, tussock-forming. Culms 10–60 cm; basal sheaths brown. Leaves: bladeless sheaths 1–3 per culm, expanding distally, to 1 mm wide; blades filiform, trigonous, not more than 1 cm. Inflorescences: involucral-bracts absent. Spikelets solitary, erect, globose-subglobose to ovoid-oblong, 10–20 mm in flower, to 50 mm in fruit; scales lead-colored to greenish gray with white-hyaline margins to 1 mm wide; empty scales more than 10, ovatelanceolate; proximal scales reflexed or spreading at maturity, 5–10 mm. Flowers: perianth bristles 10 or more, white, seldom reddish or brown, 10–18 mm, smooth; anthers 1–3 mm. Achenes ovoid to obovoid, 1.9–3.5 mm, apex minutely apiculate. 2n = 58, 60.


Phenology: Fruiting summer.
Habitat: Bogs, meadows, swales, tundra, wet places, peaty soils
Elevation: 0–500 m

Distribution

V23 31-distribution-map.jpg

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Alaska, Conn., Ind., Maine, Mass., Mich., Minn., N.H., N.J., N.Y., Pa., R.I., Vt., Wis., Eurasia

Discussion

Eriophorum vaginatum is variable; many authorities divide it into two subspecies, E. vaginatum subsp. vaginatum and E. vaginatum subsp. spissum (Fernald) Hultén, differing in spikelet shape, scale color, and anther size. The remarkable degree of morphologic overlap and the limited number of consistent characters that can be used to delimit the subspecies has been problematic and controversial. Many intermediates between the essentially sympatric subspecies occur, especially in the center of the range of the species. In the absence of definitive data only one taxon is recognized.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."not undefined" is not a number.

... more about "Eriophorum vaginatum"
ovoid;obovoid +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Peter W. Ball +  and Daniel E. Wujek +
Linnaeus +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
trigonous +  and filiform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
Tussock cotton-grass +  and linaigrette à large gaine +
terete +  and trigonous +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Greenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Conn. +, Ind. +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, Pa. +, R.I. +, Vt. +, Wis. +  and Eurasia +
0–500 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Bogs, meadows, swales, tundra, wet places, peaty soils +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
cauline +  and basal +
white-hyaline +
0mm +  and 1mm +
subumbellate +  and subcapitate +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
spreading +  and reflexed +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
adventitious +
lead-colored +  and greenish gray +
basal +  and proximal +
ovatelanceolate +
cylindric +
expanding +
0mm +  and 1mm +
Illustrated +
2 +  and 10 +
globose-subglobose;ovoid-oblong +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
Eriophorum spissum +, Eriophorum spissum var. erubescens +  and Eriophorum vaginatum subsp. spissum +
Eriophorum vaginatum +
Eriophorum +
species +
filiform +
plant +, tussock-forming +  and cespitose +