572 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



PiTHECOLOBIUM Unguis-cati (L.) Mart. 



Frequent on the rocky plain. St. Thomas; St. Jan: — Florida; 

 West Indies; Yucatan; northern South America. 



Acacia anegadensis Britton, sp. nov. 



An intricately branched tree, up to 8 m. high, the main branches 

 widely spreading, the slender twigs tortuous, glabrous. Stipules 

 a pair of rigid, acicular, persistent spines 5-15 mm. long; leaves 

 2-3 cm. long; petiole glabrous, or sparingly pubescent, 3-6 mm. 

 long, channeled above, bearing a sessile, saucer-shaped gland 

 about 0.5 mm. in diameter at the top; pinnae i-pair; petiolules a 

 little longer than the similar petiole, with a smaller, similar gland 

 between the leaflets; leaflets i-pair, rarely 2-pairs, sessile, obliquely 

 oblong or oblong-obovate, coriaceous, glabrous, 10-16 mm. long, 

 strongly and loosely reticulate-veined, rounded or emarginate at 

 the apex, obliquely obtuse at the base, lustrous on both sides; 

 peduncles solitary or 2-4 together in the upper axils, slender, 

 loosely pubescent, shorter than the leaves; heads globose, in 

 flower 5-6 mm. in diameter; flowers yellow; calyx minutely 

 toothed, about 0.6 mm. long; corolla narrow, its teeth ciliolate, 

 much shorter than the tube; stamens about 20, 3-4 mm. long, 

 the filaments filiform, the anthers minute; pod short-stipitate, 

 linear, curved, apiculate, glabrous, veiny, 3-4 cm. long, swollen, 

 the dry, subcoriaceous valves very tardily dehiscent; seeds com- 

 pressed, suborbicular, brown, dull, 3-4 mm. in diameter, 1.5 mm. 

 thick. 



Abundant on the rocky plain, and occasional on the sandy plain 

 near the West End. (Type, Britton & Fishlock 990.) 



Acuan virgatum (L.) Medic. 



Frequent on the rocky plain. Virgin Gorda; St. Thomas; St. 

 Croix; Culebra; Vieques:— Bermuda; West Indies; continental 

 tropical America. 



Cassia bicapsularis L. 



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

 Culebra; Vieques: — West Indies; continental tropical America. 



Cassia polyphylla J acq. 



Occasional on the rocky plain. St. Thomas; St. Croix: — Porto 

 Rico; Hispaniola. 



Cassia Sophera L. 



Roadside, near the settlement; apparently introduced. West 

 Indies; continental tropical America and Old World tropics. 



