64 Britton : Cuban Plants New to Science 



in length ; blades ovate-lanceolate, entire, 4-6 cm. long, 2 cm. 

 wide or less, acuminate at the apex, rounded or obtuse at the 

 base, strongly 3-veined with a very slender vein on each side near 

 the margin; staminate flowers subcapitate at the ends of fili- 

 form peduncles which are mostly as long as the petioles or longer, 

 the heads about 6 mm. in diameter; pistillate flowers in small 

 panicles on peduncles much shorter than the petioles; achene 

 compressed, ovate, acute, pale, about 0.5 mm. long. 



River-banks, Banao Mountains, Santa Clara {Brothers Leon 

 and Clement 4055, type; 5342) . 



Pilea bullata Britton, sp. nov. 



Erect-decumbent, with rather stout, pilose-pubescent stems 

 1-2.5 dm. long. Leaves ovate, 4 cm. long or less, coarsely cre- 

 nate, obtuse or bluntly acute at the apex, obtuse or rounded at 

 the base, glabrous and with very numerous, approximate, minute, 

 linear raphides above, pilose-pubescent on the prominent veins 

 beneath, the unequal pilose petioles 2 cm. long or less ; stipules 

 ovate, about 3 mm. long; inflorescence glomerate-paniculate, as 

 long as the leaves or shorter ; achene ovate, acute, about 0.5 mm. 

 long. 



Damp woods among stones, between Bahia Honda and El 

 Rosario, Pinar del Rio {Shafer 12018). 



Family PORTULACACEAE 

 Portulaca cubensis Britton & Wilson, sp. nov. 



Perennial, 2-7 cm. high. Leaves oblong to elliptic, 3-4.5 

 mm. long, 1-2 mm. broad, rounded at the apex, acutish at the 

 base, fleshy, the axils sparingly short-pilose; flowers mostly soli- 

 tary; corolla yellow; sepals ovate-lanceolate, 5-5.5 mm. long, 3 

 mm. broad at the base; petals obovate, 8-10 mm. long, 2-3.5 

 mm. broad, rounded at the apex, cuneate at the base ; capsule cir- 

 cumsessile at about the middle ; seeds blackish. 



Type collected in palm-barrens, Motembo, Santa Clara {Leon 

 & Roca 8419). 



Family MENISPERMACEAE 



Hyperbaena acutifola Britton, sp. nov. 



A small tree with slender gray twigs. Leaves oblong-elliptic, 

 coriaceous, 4-9 cm. long, 2-4 cm. wide, finely reticulate-veined on 

 both sides with the midvein rather prominent, sharply acute at 



