Bulbostylis

• Authority

  Acevedo-Rodríguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.

• Family

  Cyperaceae

• Scientific Name

  Bulbostylis

• Description

  Genus Description - Annuals or perennials, tufted, rarely solitary; culms ascending to deflexed, narrowly linear or filiform, coarsely ribbed. Leaves basal; blades capillary, setaceous, or narrowly linear, scabrous on margins, strongly nerved dorsally, pubescent, or glabrous; sheaths closed at summit, splitting with age, coarsely nerved, usually scaberulous, pubescent, or glabrous, the apex long-ciliate or fimbriate along margins, rarely glabrous, eligulate or ligulate. Inflorescence a simple or compound umbelliform cyme with elongate rays, a cluster of few to several spikelets at culm tips, or a solitary spikelet; involucral bracts 1—3(—5), leaflike, or wanting; rays filiform, ribbed, prophyllate, frequently with intraprophyllar buds; spikelets ovate to oblong-lanceolate, cylindrical or angled, sometimes compressed, many-flowered; scales spirally arranged, rarely somewhat 2-ranked, curvate-keeled or boat-shaped, pubescent or glabrous. Flowers bisexual; bristles absent; stamens 1- 3, the anthers oblong; styles 3-branched, with minutely papillate or scaly branches, the unbranched portion cylindrical or 3-angled, smooth or rarely ciliate distally, typically disarticulating above the swollen, bulbous base. Achenes 3-angled to obscurely 3-angled, rarely plano-convex, obovoid, with rounded angles, smooth, papillate, reticulate, or transversely rugulose; bristles absent.