BRITTON: FLORA OF THE VIRGIN ISLANDS 73 
Rocky slopes and cliffs, Buck Island and Flat Cays, St. Thomas; St. 
Jan and Little St. James Island, St. Jan. 
OPUNTIA RUBESCENS Salm-Dyck. [O. catacantha Link & Otto; 
O. spinosissima and tuberculata of Eggers.] Coastal hills, St. Thomas; 
St. Jan; St. Croix. The spineless or nearly spineless race is com- 
monly planted for interest, and occurs wild on Little St. James Island, 
St. Jan, and on Culebra. 
OPUNTIA REPENS Bello. [Cactus curassavicus of West; O. curas- 
savica of Eggers and of Millspaugh.] Dry fields and hillsides, St. 
Thomas; St. Jan; St. Croix. 
Opuntia antillana Britton & Rose, spec. nov. 
Plant depressed, ascending or nearly prostrate, often forming 
clumps I m. broad, seldom more than 4 dm. high. Joints obovate or 
oblong-obovate, 2 dm. long or less, green, glabrous, readily detached; 
leaves conic-subulate, 2-3 mm. long; areoles large, 2-3 cm. apart, 
brown-woolly; spines mostly 3-6 at each areole, subulate, rather stout, 
terete, 1-6 cm. long, yellow fading gray or nearly white; glochids 
many, yellow; flowers about 7 cm. broad; petals obtuse, bright 
yellew or fading reddish; fruit red-purple, about 4 cm. long. 
Rocky and sandy soil, St. Thomas, St. Croix, also on Tortola, Porto 
Rico, Hispaniola, and St. Kitts. Type specimen collected on St. Kitts 
(Rose, Fitch & Russell 3230). 
OpunTIA DiILLent (Ker.) Haw. [Cactus Dillenii Ker.; Cactus 
Opuntia of West; O. Tuna of Eggers and of Millspaugh; O. horrida 
Salm-Dyck.] Banks, fields and hills, St. Thomas; St. Jan; St. Croix. 
A hybrid with O. rubescens was observed on Buck Island, St. Thomas. 
OPUNTIA TRIACANTHA (Willd.) DC. [Cactus triacanthus Willd.] 
Coastal rocks, Buck Island, St. Thomas. 
NOPALEA COCHENILLIFERA (L.) Salm-Dyck. [Cactus cochenillifer 
L.; Opuntia coccinellifera Mill.] Persistent or spontaneous after 
cultivation; recorded by Eggers as occurring on limestone, St. Thomas; 
St.. Cro: 
PERESKIA PERESKIA (L.) Karst. [Cactus Pereskia L.; P. aculeata 
Mill.] Spontaneous after cultivation, St. Thomas; St. Croix. 
PERESKIA GRANDIFOLIA Haw. [P. Bleo of Eggers and of Mills- 
paugh.] Spontaneous after cultivation, St. Thomas; St. Croix. 
CEREUS NORTHUMBERLANDIA Lambert. [C. Jepidotus Salm- 
Dyck.] Planted, St. Croix. 
CEREUS HEXAGONUS (L.) Mill. [C. peruvianus (L.) Mill.] Planted 
(according to Eggers). 
Other species of Cacti are occasionally cultivated for interest. 
