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18. Carex sect. Lageniformes (Ohwi) Nelmes, Reinwardtia. 1: 366. 1951.
匏囊薹草组 pao nang tai cao zu
Authors: Yancheng Tang, Shuren Zhang, Tetsuo Koyama & Gordon C. Tucker
Carex subsect. Lageniformes Ohwi, Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 11: 340. 1936.
Rhizome short or oblique. Flowering culm central or arising from basal leaf axils, slender or soft, scapelike. Leaves longer than culm. Involucral bracts short, bladed or leafy, sheathed. Spikes 3-6 or more; terminal spike male; lateral spikes female. Female glumes oblong-ovate or obovate. Utricles fusiform or rhombic-fusiform. Nutlet rhombic or fusiform, with faces excavated both at upper and lower parts; style base cylindric, slightly thickened, persistent, apex truncate or shallowly concave.
About 12 species: E and SE Asia; eight species (four endemic) in China.
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| 1 |
Lower involucral bracts surpassing inflorescence |
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(2) |
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All involucral bracts much shorter than inflorescence |
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(3) |
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| 2 (1) |
Utricles 3.5-5 mm; leaves 4-7 mm wide; culms 10-20 cm tall. |
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92 C. breviscapa |
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Utricles 5-6.5 mm; leaves 2-3 mm wide; culms 5-10 cm tall. |
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87 C. rhynchachaenium |
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| 3 (1) |
Utricles 3-6 mm. |
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86 C. truncatigluma |
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Utricles 2-4 mm |
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(4) |
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| 4 (3) |
Inflorescence short, much surpassed by leaves. |
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93 C. tenuispicula |
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Inflorescence tall, equaling to longer than leaves |
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(5) |
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| 5 (4) |
Nutlets constricted at middle on angles |
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(6) |
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Nutlets not constricted on angles |
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(7) |
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| 6 (5) |
Culms, leaves, and bracts glabrous; leaves 2-4 mm wide. |
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90 C. ascotreta |
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Culms, leaves, and bracts pilose; leaves 4-12 mm wide. |
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91 C. densipilosa |
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| 7 (5) |
Male spikes linear, ca. 1 mm wide. |
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88 C. ligata |
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Male spikes linear-cylindric, ca. 3 mm wide. |
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89 C. taihuensis |
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Lower Taxa
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