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FNA | Family List | FNA Vol. 23 | Cyperaceae | Bulbostylis

6. Bulbostylis ciliatifolia (Elliott) Fernald, Rhodora. 40: 391. 1938.

Scirpus ciliatifolius Elliott, Sketch Bot. S. Carolina 1: 82. 1816; Isolepis ciliatifolius (Elliott) Torrey; Stenophyllus ciliatifolius (Elliott) C. Mohr

Herbs, annual or perennial, cespitose, slender. Culms to 40 cm, wiry. Leaves ¼–1/2 length of culms; sheaths stramineous to tan or brown, glabrous or scabrid on ribs; blades spreading to ascending, filiform, 0.5 mm wide, involute, margin glabrous or scabrid, abaxially glabrous or hirtellous. Inflorescences terminal, in simple or compound anthelae; scapes wiry, coarsely ribbed, glabrous or strumose-puberulent; longer primary involucral bracts with setaceous blades exceeding or exceeded by inflorescence. Spikelets red-brown to dark brown, lanceoloid to cylindric, longer than wide, 2–6 mm; fertile scales broadly ovate, keeled, 1–1.3 mm, apex acute, abaxially puberulent, midrib included or excurrent as mucro. Flowers: stamens 2–3; anthers narrowly oblong, 0.8–1 mm. Achenes mostly waxy gray, trigonous, obovoid, 0.8–1.5 mm, faces evenly papillate, finely rugulose or level; tubercle a small, dark, compressed-conic button.

Varieties 2 (2 in the flora): North America, West Indies (Cuba).

1 Plants annual, 10–20(–30) cm; scapes mostly 0.5 mm diam.; anthelae mostly simple, open; longest involucral bract shorter than inflorescence; fertile scales dark red-brown or dull brown.   6a var. ciliatifolia
+ Plants perennial, 15–40 cm; scapes mostly 0.5–0.7 mm diam.; anthelae mostly compound, open or dense; proximalmost involucral bract longer than inflorescence; spikelets red brown or pale brown.   6b var. coarctata

Lower Taxa


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