Britton: Studies of West Indian plants 



497 



the appressed-piibescent petioles about 2 mm. long; inflorescence 

 about 5 mm. long; bracts about 0.5 mm. long; pedicels pubescent, 

 2 mm. long or less; sepals rounded, pubescent, the larger about 

 I mm. long; "flowers yellow"; petals slightly pubescent in the 

 bud; fruit 7-8 mm. wide, about 5 mm. high, margined, rather 

 deeply notched, sparingly pubescent when young, glabrous when 

 mature, slightly decurrent on its stipe which is about 1.5 mm. long. 



Deciduous woods. Sierra Nipe, near Woodfred, Oriente, at 

 450-550 m. altitude {Shafer 3070). 



40. THE GENUS TRICERA Sw. IN CUBA 



1. Styles coherent, at least at the base. 



Leaves oblong to oblong-lanceolate, 2-3 cm. wide; styles 



coherent below. 

 Leaves broadly ovate to ovate-lanceolate, 5 cm. wide or 



less; styles coherent nearly throughout. 



2. Styles separate and distinct. 

 * Leaves 4-10 cm. long. 



Venation of the leaves manifest. 



Leaves broadly ovate, subcordate. 

 Leaves lanceolate to elliptic or obovate, narrowed 

 at the base. 

 Capsule globose-ellipsoid. 

 Capsule ovoid, acute. 

 Venation of the leaves obsolete or indistinct. 



Petioles very stout, 10 mm. long or less; leaves very 



thick. 

 Petioles slender, 2-6 mm. long; leaves firm, but not 

 very thick. 

 Twigs yellow. 

 Twigs green. 



Capsule-lobes semiovate. 

 Capsule-lobes linear-spatulate. 

 ** Leaves 1-3.5 cm. long. 



Leaves suborbicular to obovate or elliptic, not more 

 than twice as long as wide. 

 Inflorescence and capsule glabrous. 

 Inflorescence and capsule pubescent. 

 Leaves oblong to linear-oblanceolate, 2-5 times as long 

 as wide. 

 Leaves oblong, 2-3 times as long as wide. 



Leaves densely imbricated, less than i cm. long, 



the internodes very short. 

 Leaves not densely imbricated, 1.5-3.5 cm. long. 

 Staminate flowers sessile or very nearly so. 

 Staminate flowers manifestly pedicelled. 



Leaves 2-3.5 cm. long, the lateral venation 

 obsolete. 



I. T. Muelleriana. 



2. T. marginalis. 



3. T. cubana. 



4. T. acuminata. 



5. T. brevipes. 



6. T. crassifolia. 



7. T. flaviramea. 



8. T. retusa. 



9. T. gonoclada. 



10. T. rotundifolia. 



11. r. Shaferi. 



12. T. vaccinoides. 



13. T. glomerata. 



14. T. bahamensis. 



