574 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



Argythamnia Stahlii Urban. 



Occasional on the rocky plain. Porto Rico. 



CrOTON DISCOLOR Willd. 



Frequent on the sandy plain, West End, and occasional on the 

 rocky plain. Vieques; St. Thomas; St. Croix: — Hispaniola; 

 Mona; Porto Rico. 



Chamaesyce buxifolia (Lam.) Small. 



Sand dune, near East End. Virgin Gorda; St. Thomas; St. 

 Croix; St. Jan; Tortola: — Florida; Bermuda; West Indies; conti- 

 nental tropical America. 



Chamaesyce serpens (H.B.K.) Small. 



Rocky plain near the settlement. Porto Rico; St. Thomas: — 

 Antigua to Barbados; continental tropical America, north to 

 South Dakota. 



Chamaesyce Blodgettii (Engelm.) Small. 



Rocky plain near the settlement. Florida; Bermuda; Bahamas; 

 Cuba; Jamaica. 



Chamaesyce anegadensis Millsp. Field Mus. Bot. 2: 394. 

 1914. 

 Frequent on the rocky plain. Endemic. 



Chamaesyce articulata (Aubl.) {Euphorbia articulata Aubl.) 



Frequent on the sandy plain, West End. Tortola; St. Jan; 

 St. Thomas; Culebra; Vieques: — Porto Rico to St. Vincent. 



Aklema petiolaris (Sims) Millsp. 



Frequent on the rocky plain. Tortola; St. Jan; St. Thomas; 

 Culebra; Vieques: — Hispaniola to St. Martin and Guadeloupe. 



Rhacoma crossopetalum L. 



Frequent on the sandy plain. West End. Virgin Gorda; 

 Tortola; Culebra; St. Thomas; St. Jan: — Florida; Bermuda; 

 West Indies; Colombia. 



Gyminda latifolia (Sw.) Urban. 



Frequent on the sandy plain, West End. St. Thomas; Vieques: 

 — Florida; West Indies; Mexico. 



Elaeodendron xylocarpum (Vent.) DC. 



Frequent on the sandy plain. West End. Tortola; St. Jan; 

 St. Thomas; St. Croix; Vic(iues; Culel)ra: — Porto Rico. 



