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57. CAREX sect. VULPINAE (Heuffel) Christ, Bull. Soc. Roy. Bot. Belgique. 24(2): 18. 1885.
海绵基薹草组 hai mian ji tai cao zu
Vignea [unranked] Vulpinae Heuffel, Flora 27: 529. 1844.
Rhizome short or absent. Culms tufted; sheaths transversely rugulose. Involucral bracts glumelike, lower ones sometimes setaceous or narrow, leaflike. Spikes numerous, androgynous (lower ones sometimes female), many flowered, several aggregated on abbreviated branches, forming large, usually dense spicate-paniculate inflorescence. Utricles plano-convex, leathery or membranous, ± strongly patent at maturity, veined, base spongy, beak orifice 2-toothed.
About 15 species: mainly in North America, some species in E, N, and S Africa, temperate zone of Asia, S Australia, and Europe; four species (one endemic) in China.
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| 1 |
Female glumes without awn at apex. |
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492 C. earistata |
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Female glumes with scabrous awn at apex |
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(2) |
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| 2 (1) |
Utricles lanceolate (i.e., broadest at base), membranous, beak slightly 2-toothed, deeply cuneate cleft abaxially. |
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489 C. stipata |
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Utricles ovate, ovate-lanceolate, or oblong-lanceolate (i.e., broadest at lower 1/4 or 1/3) |
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(3) |
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| 3 (2) |
Culms narrowly winged; female glumes with brown, slightly scabrous, 1-1.5 mm long awn; utricles leathery, with very small tubercles, at maturity reddish or ferruginous-brown, with thickened veins, beak deeply cleft abaxially, slightly cuneate-cleft adaxially. |
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490 C. vulpina |
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Culms wingless; female glumes with green strongly scabrous shorter awn; utricles membranous, shining, without tubercles, at maturity greenish yellow or slightly brownish, thinly veined, beak equally cleft abaxially and adaxially. |
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491 C. otrubae |
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Lower Taxa
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