Rhynchospora capillacea

Torrey

Fl. N. Middle United States 1: 55. 1823.

Common names: Rhynchospore capillaire
IllustratedEndemic
Basionym: Rhynchospora setacea (Muhlenberg) MacMillan 1892
Synonyms: Phaeocephalum capillaceum (Torrey) Farwell Triodon capillaceus (Torrey) Farwell
Treatment appears in FNA Volume 23. Treatment on page 213. Mentioned on page 202, 214.
Please click on the illustration for a higher resolution version.
Illustrator:

Copyright:

Plants perennial, cespitose, 10–40 cm, wiry; rhizomes stoloniferous, slender, to 1.5 mm thick. Culms erect or curved, leafy, filiform, angularly fewribbed. Leaves ascending-excurved, overtopped by culm; blades filiform, involute, apex setaceous. Inflorescences: spikelet clusters 1–2(–3), often sparse, ellipsoid or narrowly turbinate, less than 1 cm wide; subtending foliaceous bracts exceeding compounds. Spikelets erect or ascending, pale redbrown to brown, fusiform, 6–7 mm; fertile scales elliptic, 4 mm, apex rounded or acute, midrib shortexcurrent or not. Flowers: perianth bristles 6, overtopping tubercle base, mostly retrorsely barbellate, sometimes smooth [forma laeviseta (E. J. Hill) Fernald]. Fruits 1–4(–5) per spikelet, 2.5–3 mm; body pale brown, slender stipitate, ellipsoid, lenticular, 1.5–2 × 0.8–1 mm; surfaces longitudinally minutely striate, obscurely transversely lowrugose, dotted; tubercle narrowly triangularsubulate, flattened, 0.8–1.7 mm.


Phenology: Fruiting summer–fall.
Habitat: Moist to wet calcareous fens, seeps over limestones or calcareous rock, marsh meadows
Elevation: 0–1000 m

Distribution

V23 367-distribution-map.jpg

Alta., Man., N.B., Nfld. and Labr., Ont., Que., Sask., Ala., Ark., Conn., Ill., Ind., Iowa, Maine, Mass., Mich., Minn., Mo., N.H., N.J., N.Y., N.Dak., Ohio, Okla., Pa., R.I., S.Dak., Tenn., Tex., Vt., Va., Wis.

Discussion

The two beakrushes most commonly occurring in fens are Rhynchospora capillacea and R. capitellata.

Selected References

None.

Lower Taxa

None.
... more about "Rhynchospora capillacea"
Robert Kral +
Torrey +
Rhynchospora setacea +
Rhynchospore capillaire +
Alta. +, Man. +, N.B. +, Nfld. and Labr. +, Ont. +, Que. +, Sask. +, Ala. +, Ark. +, Conn. +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +  and Wis. +
0–1000 m +
Moist to wet calcareous fens, seeps over limestones or calcareous rock, marsh meadows +
Fruiting summer–fall. +
Fl. N. Middle United States +
Illustrated +  and Endemic +
Phaeocephalum capillaceum +  and Triodon capillaceus +
Rhynchospora capillacea +
Rhynchospora +
species +