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26nnn. CAREX Linnaeus sect. FILIFOLIAE (Tuckerman) Mackenzie in N. L. Britton et al., N. Amer. Fl. 18: 177. 1935.
Joy Mastrogiuseppe
Carex [unranked] Filifoliae Tuckerman, Enum. Meth. Caric., 8. 1844
Plants cespitose, short-rhizomatous. Culms brown at base. Leaves: basal sheaths fibrous; sheath fronts membranous; blades filiform or V-shaped in cross section when young, glabrous. Inflorescences a single spike; bracts absent; spike androgynous. Proximal pistillate scales with apex obtuse or mucronate. Perigynia erect or ascending, veinless, or with 2 prominent marginal veins, obovate, ovate, or elliptic, rounded trigonous in cross section, base ± tapering or rounded, apex rounded or truncate, to abrupt beak or not, puberulent distally; beak 0.2–1 mm, orifice truncate. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; style deciduous.
Species 5 (3 in the flora): North America, Mexico.
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| 1 |
Leaf blades folded to channeled, not quill-shaped, 1.5–2 mm wide near base; proximal pistillate scale usually conspicuously long-awned. |
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472 Carex oreocharis |
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Leaf blades involute-cylindric, quill-shaped, 0.2–0.8 mm wide near base; proximal pistillate scale obtuse to short-awned. |
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(2) |
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| 2 (1) |
Perigynium body glabrous or at most very sparsely short-hirsute near beak; style base not conspicuously exserted from beak, rachilla absent. |
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474 Carex elynoides |
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Perigynium body short-pubescent, at least on distal 1/4; style base often conspicuously exserted from beak; rachilla present. |
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473 Carex filifolia |
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Lower Taxa
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