FLOKA OF ST. CROIX AND THE VIRGIN ISLANDS. 91 



738. C. betulinus, Vahl (Symb. Bot, ii, p. 98). 



n. all the year round. A low sliriib, brownish. Common in thick- 

 ets. — All islands. 



739. C. flavens, L. (v. Mariin). 



Fl. all the year round. Gregarious on dry hills, also as secondary 

 growth ; very common, and a troublesome shrubby weed. — All islands. 



740. C. discolor, Willd. (Spec. Plant, iv, 352) (C. ialsamifer,!..). 



Fl. all the year round. Aloug roads in dry localities, common. — St. 

 Croix (eastern part of the island); St. Thomas (Hb. Thunb. sec. DC, 

 Prodr. 1. c. p. 615). 



741. C. oval folius, West. 



Fl. all the year round. Along roads and in waste places, very com- 

 mon. — All islands. 



742. C. lobatus, L. 



Fl. March-Dec. In the same places as the preceding, very common. — 

 All islands. 



743. C. humilis, L. 



St. Thomas (Bertero sec. DC. Prodr. 1. c. 670). 



(An arboreous as yet undetermined Crotonea, not found in blossom, 

 occurs in a few specimens on Flag Hill in St. Thomas.) 



744. Aleurites Moluccana, Willd. (Spec. Plant, iv, 590) (A. triloba, Forst.) (v. 



Walnut). 



Fl. all the year round. Naturalized near dwellings and in gardens. — 

 St. Croix ; St. Thomas. 



745. Ricinella pedunculosa, Miill. (Linntea, xxxiv, 153) {AdeUa Ridnclla, L.). 



Fl. March-May, precocious. Always verj'^ spiny. In dry thickets, 

 not uncommon. — -All islands. 



746. Argyrothamnia fasciculata, Miill. (Linnaea, 1. c. 146) (Ditaxis, Sclil.). 



Fl. Jan.-May and Sept. In thickets, not uncommon. — All islands. 



747. A. candicans, Miill. (DC. Prodr. 1. c. 741) {Argythamnia, Sw.). 



Fl. Sept.-April. Capsule dark blue ; seeds verrucose. In thickets, 

 common. — All islands. 



748. Acalypha chamaedrifolia, Miill. (1. c. 879). (3) genuina (A. reptans, Sw.), 



y) brevipes. 



Fl. all the year round ; female flowers developing gradually. Bracts 

 persistent after dissemination. On rocks and in crevices, not uncom- 

 mon.— St. Croix (,5); St. Thomas {y). 



