Britton: Cuban Plants New to Science 75 



Phyllanthus dimorphus Britton & Wilson, sp. nov. 



A glabrous perennial herb, 5-6 dm. tall, with slender woody 

 stems branching mostly near the apex, the slender branches 

 straight, ascending or spreading, 8-14 cm. long. Leaves oblong 

 or elliptic-oblong, 5-9 mm. long, 2-2.5 mm - broad, short-petioled, 

 rounded or occasionally somewhat acutish at the apex, rounded 

 at the base, dark-green above, paler beneath; stipules narrowly 

 lanceolate, 1 1.5 mm. long, purplish-black; flowers dioecious; 

 pistillate flowers slender-pedicelled, their sepals obovate to broadly 

 obovate, 2 mm. long, 1-1.5 mm. broad, rounded at the apex; 

 styles of flowers of some plants 3, slender, forked above the mid- 

 dle ; of other plants united into a column about 1 mm. long, the 

 stigma orbicular, peltate, entire; staminate flowers not seen. 



Grassy hill between El Porvenir and Aguacate, Trinidad 



mountains, Santa Clara, 700-900 m. altitude (Britton & Wilson 



5350). 



Croton cueroensis Britton & Wilson, sp. nov. 



Shrub 2 m. tall ; the twigs and petioles densely ferruginous- 

 hispid with stellate hairs when young, grayish in age. Leaves 

 broadly ovate to suborbicular, 1.8-3.4 cm - l n g> T -5 -2 -8 cm - 

 broad, more or less soft pubescent above with stellate hairs, stel- 

 late-canescent beneath; petioles 0.8-1.5 cm. long; stipules subu- 

 late, broadening at the base, 7-1 1.5 mm. long; buds subglobose, 

 flattened; sepals of the staminate flowers ovate; filaments tomen- 

 tose ; capsule densely stellate-tomentose ; seed short-ovoid, 3.5 

 mm. long, 3 mm. broad, grayish. 



Vicinity of El Cuero, Oriente (Britton & Cotvell 12735) 

 Differing from C. spiralis Muell. Arg. in the long, subulate 



stipule which is not coiled at the base, also by the stellate hairs of 



the upper surface, which are long-rayed. 



Argythamnia cubensis Britton & Wilson, sp. nov. 



A small shrub with brownish or purplish-brown decumbent 

 branches ; leaves elliptic to oval or obovate, 1-2.5 cm. long, 0.5-1.4 

 cm. broad, rounded or acute at the apex, acute at the base, entire 

 or crenulate, short-petioled, purplish-brown and more or less 

 strigillose on both surfaces ; staminate flowers about 2 mm. 

 broad; sepals 5, lanceolate, 1-1.2 mm. long, 0.5 mm. broad; petals 

 5. ovate, 1-1.1 mm. long, 0.5-0.6 mm. broad; stamens 5, the fila- 

 ments distinct ; sepals of the pistillate flowers 5, ovate, acuminate 

 at the apex ; styles 3, distinct, bifid ; capsule about 3 mm. in diam- 

 eter; seeds subglobose, 1.1-1.2 mm. broad, reticulated. 



