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43. Carex sect. Praelongae (Kükenthal) Nelmes, Reinwardtia. 1: 421. 1951.
帚状薹草组 zhou zhuang tai cao zu
Authors: Prof. Song-Yun Liang, Tetsuo Koyama & Gordon C. Tucker
Carex subsect. Praelongae Kükenthal in Engler, Pflanzenr. 38(IV. 20): 345. 1909.
Rhizome short or stoloniferous. Culms acutely trigonous, clothed at base with bladeless sheaths ± disintegrating into reticulate fibers. Leaves flat, margins revolute. Involucral bracts leaflike, sheathless. Terminal spike male or gynaecandrous; lateral spikes female, long cylindric, ± pedunculate, often pendent. Female glumes ferruginous, glandular or not, green 3-veined costa excurrent into a mucro or awn at apex. Utricles plano-convex, biconvex, or inflated at maturity, usually densely minutely papillose or with purple-red flecks, apex with short beak or not, orifice entire or 2-toothed. Style erect or curved; stigmas 2.
About 29 species: mainly in E Asia, also in tropical and S Africa, SE Asia, W Himalayas, Madagascar, and Sri Lanka; 17 species (ten endemic) in China.
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| 1 |
Utricles densely minutely papillose |
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(2) |
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Utricles with purple-red flecks or faintly minutely papillose |
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(6) |
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| 2 (1) |
Female glumes with scabrous awn at truncate or emarginate apex |
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(3) |
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Female glumes with mucro at acuminate or subrounded apex |
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(4) |
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| 3 (2) |
Terminal spike gynaecandrous, female part ca. 5 mm wide, male part ca. 3 mm wide, lateral female spikes rather thick, 5-6 mm wide. |
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437 C. dimorpholepis |
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Terminal spike male, narrowly cylindric, 1.5-2 mm wide, lateral female spikes rather slender, 3-4 mm wide. |
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438 C. phacota |
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| 4 (2) |
Female spikes 25-30 × 8-9 mm. |
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434 C. maximowiczii |
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Female spikes 40-50 × 3-6 mm |
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(5) |
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| 5 (4) |
Female glumes oblong, subrounded at apex. |
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435 C. subcernua |
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Female glumes oblong-lanceolate or lanceolate, acuminate at apex. |
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436 C. pruinosa |
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| 6 (1) |
Utricles not inflated at maturity |
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(7) |
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Utricles inflated at maturity |
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(9) |
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| 7 (6) |
Terminal spike male, lateral spikes female; utricles elliptic. |
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422 C. melinacra |
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Upper 1-5 spikes gynaecandrous, remaining spikes female; utricles ovate or obovate |
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(8) |
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| 8 (7) |
Female glumes obovate, 2-lobed at apex; style erect; spikes narrowly cylindric, 5-10 cm. |
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423 C. praelonga |
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Female glumes lanceolate, acuminate at apex; style base curved; spikes cylindric, 1.5-3 cm. |
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424 C. goligongshanensis |
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| 9 (6) |
Female glumes dark brown |
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(10) |
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Female glumes light brown or light red |
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(12) |
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| 10 (9) |
Plants 150-160 cm tall; spikes up to ca. 17 cm, branched at base. |
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431 C. lancangensis |
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Plants 65-100 cm tall |
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(11) |
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| 11 (10) |
Spikes 5.5-12 cm, terminal spikes male; utricles without purple-red flecks. |
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432 C. jinfoshanensis |
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Spikes 1.5-5 cm, terminal spike gynaecandrous; utricles with purple-red flecks. |
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433 C. longpanlaensis |
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| 12 (9) |
Female glumes much longer than utricle. |
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425 C. cremostachys |
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Female glumes short than or equaling utricle |
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(13) |
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| 13 (12) |
Utricles hardly beaked |
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(14) |
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Utricles with short and erect beak |
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(15) |
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| 14 (13) |
Leaves 8-12 mm wide; female spikes long cylindric, 50-90 × 5-6 mm. |
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426 C. fargesii |
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Leaves 4-5 mm wide; female spikes cylindric, 25-40 × 3.5-4 mm. |
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427 C. makuensis |
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| 15 (13) |
Spikes 3 or 4, terminal spike male. |
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428 C. aequialta |
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Spikes 5-8, upper 2 or 3 male |
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(16) |
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| 16 (15) |
Female glumes broadly ovate, 1.8-2 mm; female spikes 70-85 × ca. 3 mm. |
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429 C. wawuensis |
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Female glumes lanceolate, 2.5-3 mm; female spikes 60-130 × 4-6 mm. |
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430 C. longispiculata |
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List of lower taxa
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