FLORA. OF ST. CROIX AND THE VIRGIN ISLANDS. 105 



880. P. diffusum, Sw. 



Fl. May-Oct. Antliers orange-coloured; stigmas dark purple. In 

 moist localities, uncommon. — All islands. 



881. P. maximum, Jacq. (v. Guinea Grass) {P. po]>ifjamum, Sw.). 



Fl. June-Sept. Anthers brownish; stigmas light purple. A splendid 

 pasture-grass, growing to the height of" lli', forming dense tufts and 

 being propagated by the rhizome. ^Naturalized and cultivated every- 

 where. — All islands. 



882. P. divaricatum, L. u) and 3) puberulum. 



Fl. May-Dec. Anthers light yellow; stigmas white. Resembling a 

 thin Bamboo Cane. 8'-16' high. Both forms not uncommon in forests, 

 climbing over trees and shrubs. — All islands. 



883. P. glutinosum, Sw. 



St. Croix (West, p. 267). 



884. P. brevifolium, L. 



Fl. Aug.-Dec. Anthers and stigmas white. In gardens and along 

 roads, here and there. — St. Thomas (Barracks). 



885. p. cayennense, Lam. 



St. Thomas (Schlechtendal). 



886. Setaria glauca, P. Br. a). 



Fl. May-Oct. In forests, common. — All islands. 



887. S. setosa, P. Br. a) and /3) caudata, R. S. (v. Sour Grass). 



Fl. April-Dee. Anthers orange-coloured; stigmas purple, a) Z'-l' 

 high ; in forests and along ditches, common. — All islands, (i ) in dry 

 thickets, uncommon. — St. Thomas (Cowbell's Hill). 



888. Cenchrus echinatus, L. /3) viridis, Spreng. (v. Burr Grass). 



Fl. April-Dec. Anthers light yellow; stigmas white, with a purple 

 spot in the middle. The ripe farinaceous seeds eaten by the cattle. 

 Along the coast, very common. — All islands. 



889. Anthephora elegans, Schreb. 



Fl. Jan.-Oct. Anthers brownish. In thickets, here and there. — St. 

 Croix ; St. Thomas. 



890. Tricholasna insularis, Gris. (v. Bitter Grass, Long Grass). 



Fl. March-Dec. Anthers brownish; stigmas white. ITever touched 

 by cattle whilst green, on account of its bitter taste. Spikelets easily 

 detached and carried far away by the wind. Very common along roads 

 and in dry places. — All islands. 



