104 FLOE A OF ST. CROIX AND THE VIRGIN ISLANDS. 



870. D. setigera, Kunth. 



Fl. June-Oct. Anthers and stigmas purple. Along roads, common. 

 All islands. 



871. Eriochloa punctata, Hamilt. 



Fl. March-Sept. Anthers brownish ; stigmas black. In moist locali- 

 ties, here and there. St. Croix (Crequis, La Grange) ; St. Thomas 

 (Schl.). 



872. Stenotaphrum americanum, Schrank (v. Horse Grass). 



Fl. May-Aug. Anthers orange-coloured 5 stigmas purple. Along the 

 coast and in moist localities, gregarious, common. All islands. 



873. Orthopogon setarius, Spreng. 



Fl. March-Dec. Anthers light purple ; stigmas purple. In forests, 

 common. All islands. 



874. Pauicum paspaloides, Pers. 



Fl. March-Sept. Anthers reddish; stigmas straw-coloured. The 

 hermaphrodite flower in this and all other species of Panicum is proter- 

 androus, the stamens dropping off before the stigmas appear. These 

 latter are then fertilized by the agency of the wind from other individ- 

 uals before the stamens of the male flower make their appearance, self- 

 fertilization being thus evidently impossible. Along rivulets and in 

 moist localities, not uncommon. St. Croix ; St. Thomas. 



875. P. brizoides, L. 



St. Thomas (Schlechtendal). 



876. P. colonum, L. 



Fl. March r Sept. Anthers purple; stigmas black. Along roads and 

 ditches, common. All islands. 



877. P. prostratum, Lam. a) and /?) pilosa, Egg. 



Fl. June-July. Anthers orange-coloured ; stigmas black. /3 ) Ehachis 

 of spikelets pilose. ) All islands (common); /3) St. Croix (La Grange). 



878. P. fuscum, Sw. (v. Sour Grass), a) and /?) fasciculatum, Sw. 



Fl. Feb.-Sept. Anthers orange-coloured ; stigmas purple. Abhorred 

 by the cattle. a) All islands, ft) St. Croix; St. Thomas (Schlechten- 

 dal). Not uncommon. 



879. P. molle, Sw. (v. Yerba de Para", Spanish Grass). 



Fl. May-Oct. Anthers yellow; stigmas purple. Naturalized here 

 and there in pastures. St. Croix (Cotton Grove). \ 



