Setaria setosa (Sw.) P.Beauv.

  • Authority

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

  • Family

    Poaceae

  • Scientific Name

    Setaria setosa (Sw.) P.Beauv.

  • Description

    Species Description - Perennial herb, lacking stolons; flowering culms 4-10 d m tall, erect or decumbent at the base, sparingly branched. Leaf sheaths glabrous or hairy; ligule 0.7-1 mm long; blades linear, flat, 10- 25 x 0.1-2.5 cm, smooth, glabrous or hairy on the upper surface. Inflorescence linear; main axis 7-22 cm long; primary branches 4-10 mm long. Spikelets solitary, ovate, 2-2.4 x 1-1.2 mm , subtended by more than one bristle, beneath each spikelet; lower glumes 0.9-1.1 mm long, 3-nerved; upper glumes 1.6-1.8 mm long, 3-5-nerved; lemma of lower floret ovate, 5-nerved, muticous, the palea fully developed; lemma of upper floret ovate, indurate, rugose, yellow, 1.7-2.2 mm long, apiculate.

  • Discussion

    Panicum caudatum Lam., Tabl. Encycl. 1: 171. 1791. Setaria caudata (Lam.) Roem. & Schult., Syst. Veg. 2: 49. 1817.

  • Distribution

    A common herb of open, dry to moist areas. Fish Bay (W470), Lameshur (W430), Margaret Hill (W530). Also on St. Croix, St. Thomas, and Virgin Gorda; West Indies to northern South America.

    Saint Croix Virgin Islands of the United States South America| Saint Thomas Virgin Islands of the United States South America| Virgin Gorda Virgin Islands South America| West Indies| South America|