500 Britton: Studies of West Indian plants 



mm. long; young staminate flowers about 2 mm. long, on pedicels 

 about as long; capsule ovoid, obtuse, glabrous, 7-8 mm. long, 

 5-6 mm. thick, the persistent styles somewhat recurved, linear, 

 5 mm. long, separated from each other about 1 mm. at the base. 



Palm-barren, Santa Clara City, Santa Clara {Britton & Cowell 

 13324, type; Britton & Wilson 6211). 



8. Tricera retusa Griseb. Nachr. Ges. Wiss. Goetting. 1865: 



163. 1865 

 Buxus retusa Muell. Arg. in DC. Prodr. 16 1 : 17. 1869. 

 Type locality: Monte Verde, Oriente. 

 Distribution: Mountains of northern Oriente. 



9. Tricera gonoclada C. Wright; Griseb. Cat. PI. Cub. 282. 



1866 



Buxus gonoclada Muell. Arg. in DC. Prodr. 16 1 : 16. 1869. 

 Type locality: Savanna near Guamacaro, western Cuba. 

 Distribution : Known only from the type locality. 



10. Tricera rotundifolia sp. nov. 



A glabrous shrub, 6 dm. high, much branched, the internodes 

 mostly shorter than the leaves. Leaves suborbicular to obovate, 

 coriaceous, 2 cm. long or less, rounded and mucronulate or 

 slightly emarginate at the apex, narrowed at the base, the margins 

 thickened and somewhat revolute, the midvein rather prominent 

 beneath, the lateral venation obsolete, the petioles 1.5-2 mm. 

 long; inflorescence glabrous, few-flowered, in the uppermost axils; 

 pedicels of the staminate flowers about 3 mm. long; bracts ovate, 

 acute, 1 mm. long; staminate flowers 1.5 mm. long, their segments 

 oblong-lanceolate, acute; capsule ovoid, about 6 mm. long, glabrous, 

 the persistent styles contiguous, about 2 mm. long. 



Between Camp La Barga and Camp San Benito, about 1,000 

 m. alt., northern Oriente (Shafer 41 14). 



1 1 . Tricera Shaferi sp. nov. 



A much-branched shrub up to 3 m. high, the twigs slender, 

 glabrous, the internodes shorter than the leaves. Leaves obovate to 

 elliptic, coriaceous, 1.5-3.5 cm - l n g> rounded or retuse at the 

 apex and minutely mucronulate, narrowed or obtuse at the base, 

 the midvein impressed above, prominent beneath, the lateral 

 venation wholly obscure, the upper surface shining, dark green, 



