Cyperus seslerioides Kunth
Family: Cyperaceae
Texas flatsedge
[Cyperus andinus ,  more]
Cyperus seslerioides image
Max Licher  
Herbs, perennial, cespitose; rhizomes knotty, much branched, 2-5 mm diam., scaly. Culms roundly trigonous, basally with dark fibrous remnants of old leaf sheaths, (0.5-)4-30 cm × 0.4 -1.1 mm, glabrous. Leaves 1-5, flat, involute toward apex, 3-18 cm × 1-2.5(-3) mm. Inflorescences: heads hemispheric to spheric, (3-)6-15(-24) mm diam.; rays absent; bracts 2-5, horizontal to reflexed, parallel to culm, 1-13 cm × 1-3 mm, margins and keel sparsely minutely scabridulous distally. Spikelets (5-)20-60(-100), whitish to greenish or brownish, ovoid to oblong-lanceoloid, compressed, 3-7 × 2-4 mm; floral scales (8-)10-12(-24), laterally milky white (infrequently yellowish, pale greenish, brown, or bronze-white), medially green or white, laterally ribless, medially 3-ribbed, ovate to ovate-lanceolate, 1.6-3(-3.4) × 0.8-1.3 mm, apex mucronate to acuminate. Flowers: stamens 3; anthers linear, (0.4-)0.6-0.8(-1.1) mm, connective not prolonged; styles 0.8-1.8 mm; stigmas (0.5-)1-1.5(-2) mm. Achenes brown to blackish, trigonous, broadly obovoid, 0.5-1 × 0.3-0.75 mm, base slightly stipelike, ± cuneate to rounded, apex apiculate, papillose. Fruiting summer. Seeps, damp meadows in montane forests; 1000-2000 m; Ariz., Tex.; Mexico; Central America (Honduras); South America.
Cyperus seslerioides image
Max Licher  
Cyperus seslerioides image
Sue Carnahan  
Cyperus seslerioides image
Sue Carnahan  
Cyperus seslerioides image
Max Licher  
Cyperus seslerioides image
© Elizabeth Torres Bahena  
Cyperus seslerioides image
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
National Museum of Natural History Image Collection  
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
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Cyperus seslerioides image
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Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
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Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image
Cyperus seslerioides image