Marsh Bristlegrass (Sampled Red List Index Flora of Peru)

Marsh Bristlegrass

Setaria parviflora

Summary ³

Setaria parviflora is a species of grass known by the common names marsh bristlegrass, bristly foxtail, knotroot bristlegrass, and yellow bristlegrass. It is native to North America, including Mexico and the United States from California to the East Coast, Central America and the West Indies, and South America.

Location ⁴

Argentina; Bahamas; Belize; Bolivia, Plurinational States of; Brazil; China; Colombia; Costa Rica; Dominican Republic; Ecuador; El Salvador; French Guiana; Guatemala; Guyana; Honduras; Indonesia; Nicaragua; Norway; Panama; Papua New Guinea; Paraguay; Peru; Sri Lanka; Thailand; Turks and Caicos Islands; United Kingdom; United States (Alabama, Arizona, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Mississippi, Missouri, Nevada, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Utah, Virginia, Washington, West Virginia); Venezuela, Bolivia.

Description ⁴

Tufted perennials with erect, spreading or ascending culms to c. 1.2 m tall.
Culms smooth except below inflorescence, glabrous. Sheaths compressed, sometimes scabrous upwards, glabrous; ligule densely ciliate, c. 1 mm long; blade flat, usually straight, acuminate, to 25 cm long and 8 mm wide, scabrous, often glaucous, lower surface glabrous.

Inflorescence long-exserted, erect, cylindrical, dense, mostly 1–10 cm long, branches very short, bristles 1–6 times longer than spikelets. Spikelets ovoid, ovate-elliptic, 2–2.8(–3) mm long, each on a short branch subtended by short branchlets divided into 4–12 bristles 2–12 mm long. Lower glume 30–40% spikelet length, broad ovate to triangular, subacute; upper 50–65% spikelet length, obtuse to subacute. Lower lemma staminate or sterile, as long as the spikelet, acute or apiculate; palea as long as lemma, broad, hyaline. Upper lemma bisexual, subequal to spikelet, finely transversely rugose; palea similar to lemma.

Habitat Type ⁴

Moist sandy soils, acid flatwoods and marshes.

Fuentes y créditos

(c) Josh*m, algunos derechos reservados (CC BY-NC-SA), http://www.flickr.com/photos/gravitywave/1425670061/
Adaptado por consci2014 del trabajo de (c) Wikipedia, algunos derechos reservados (CC BY-SA), http://en.wikipedia.org/wiki/Setaria_parviflora
(c) consci2014, algunos derechos reservados (CC BY-SA)