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26. Carex sect. Decorae (Kükenthal) Ohwi, Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 11: 338. 1936.
美穗薹草组 mei sui tai cao zu
Authors: Prof. Song-Yun Liang, Tetsuo Koyama & Gordon C. Tucker
Carex subsect. Decorae Kükenthal in Engler, Pflanzenr. 38(IV. 20): 541. 1909.
Rhizome short or long creeping. Culms slightly stout. Leaves basal or cauline. Involucral bracts leaflike, rarely setaceous, sheathing. Inflorescence a panicle, each partial panicle with 2-7 spikes; terminal 1 or 2 male; remaining spikes androgynous, with unequal peduncles. Female glumes pale brown, purple-red, or blood-red. Utricles suberect or obliquely patent, elliptic or ovate-lanceolate, compressed trigonous, glabrous or hispid, beak long, orifice pale hyaline. Nutlets oblong or elliptic-obovate, trigonous; stigmas 3.
About 26 species: E, S, and SE Asia; 11 species (eight endemic) in China.
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1 |
Leaves cauline. |
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176 C. insignis |
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Leaves basal, rarely cauline |
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(2) |
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2 (1) |
Spikes sessile or subsessile, several spikes aggregated in capitate inflorescences. |
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184 C. subperakensis |
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Spikes pedunculate, not forming capitate inflorescences |
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(3) |
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3 (2) |
Leaf blades 7-12 mm wide |
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(4) |
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Leaf blades 2-5 mm wide |
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(7) |
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4 (3) |
Style base curved. |
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182 C. zhenkangensis |
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Style base erect |
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(5) |
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5 (4) |
Utricles glabrous, faintly veined; style base glabrous. |
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183 C. baiposhanensis |
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Utricles hispidulous, conspicuously veined |
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(6) |
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6 (5) |
Style base hispidulous. |
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185 C. perakensis |
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Style base glabrous. |
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186 C. morii |
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7 (3) |
Utricles ca. 2.3 mm; culms compressed cylindric. |
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177 C. pomiensis |
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Utricles 3-7 mm; culms trigonous |
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(8) |
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8 (7) |
Female glumes ± equaling utricle, apex obtuse, muticous; utricles hispidulous, curved, stipitate. |
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178 C. jizhuangensis |
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Female glumes much shorter than utricle, 1-veined costa excurrent into an awn at apex; utricles glabrous or sparsely pubescent, contracted at base |
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(9) |
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9 (8) |
Utricles lanceolate, 6-7 mm, sparsely pubescent. |
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181 C. urelytra |
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Utricles elliptic, 3-4 mm, glabrous |
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(10) |
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10 (9) |
Spikes 3-4 cm; utricles yellowish green. |
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179 C. dielsiana |
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Spikes 1-2 cm; utricles chestnut-brown. |
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180 C. anomoea |
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List of lower taxa
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