62 Britton : Cuban Plants New to Science 



As grown at The New York Botanical Garden, the young 

 leaves are always pubescent, but become glabrous soon after 

 reaching their full size. 



Family URTICACEAE 



Pilea sumideroensis Britton, sp. nov. 



Fleshy, bushy, glabrous, branched, 2.5-4 dm. high, the branches 

 stout, ascending, the main stem nearly 1 cm. thick. Leaves thick, 

 fleshy, obovate, 6-18 mm. long, entire, obscurely pinnately about 

 5-veined, rounded at the apex, cuneate at the base, the margins 

 revolute, the upper surface densely covered with linear raphides, 

 the under surface finely reticulate when dry, the very slender 

 petiole 9 mm. long or less. 



Top of high cliff, limestone hills, vicinity of Sumidero, Pinar 

 del Rio (Shafer 13816). Described from sterile specimens, but 

 apparently not referable to any previously known species. 



Pilea ( ?) carnosa Britton, sp. nov. 



Shrubby, erect, fleshy, 5 dm. high, the stems white. Leaves 

 thick, nearly orbicular, 6-12 mm. broad, faintly 3-nerved, rounded 

 at the apex, rather abruptly narrowed at base into slender pe- 

 tioles 8 mm. long or less. 



Cliff, at 160 m. altitude, Ensenada de Mora, Oriente (Britton, 

 Cowell & Shafer 12967) . 



A curious plant, referred to this genus with hesitation. 



Pilea sevillensis Britton, sp. nov. 



A slender vine, 3 dm. long or longer, creeping on the bark of 

 trees, somewhat branched, the young twigs and petioles spar- 

 ingly pubescent. Leaves oval or suborbicular, 1.5 cm. long or 

 less, those of each pair nearly of the same size, 3-nerved, entire, 

 rounded at the apex, obtuse at the base, the linear raphides incon- 

 spicuous above, prominent and loosely scattered beneath, the 

 slender petioles 5-12 mm. long ; stipules semi-orbicular, 2-3 mm. 

 broad ; cymes few-flowered, shorter than the leaves ; achene about 

 1.5 mm. long. 



Canon, Upper Guama River, Sevilla Estate, near Santiago, 

 Oriente (Taylor 183). 



