Britton : Studies of West Indian plants 9 



Rocky Cliff, Somerset, Manchester, September 23, 1908, 

 Harris & Britton 1060Q. 



Bidens clarendonensis sp. nov. 



Perennial, glabrous, the stem and branches terete, trailing, 

 somewhat woody. Leaves firm in texture, 4-7 cm. long,r hombic- 

 ovate, acute at the apex, rather coarsely serrate, except at the 

 broadly cuneate base, with slightly incurved gland-tipped teeth 

 with revolute margins, the venation rather prominent, the petioles 

 one fourth to one third as long as the blades; heads several to- 

 gether, on stalks 1.5 cm. long or less; involucre nearly hemispheric, 

 many-flowered, its bracts about 1 cm. long, linear, obtuse or with 

 a triangular acutish tip, 1.5-2 mm. wide; ray flowers about 5, 

 1.5-2 cm. long, the rays oblong, orange yellow, 2-toothed, 6-7 

 mm. wide, the tube about 3 mm. long; disk flowers 6 mm. long, 

 the cylindric limb acutely 5-toothed; achenes I cm. long, less than 

 0.5 mm. thick, pappus of I or 2 subulate awns about 0.5 mm. 

 long at flowering time, becoming 2 mm. long and downwardly 

 barbed at maturity. 



Peckham woods, Upper Clarendon, July 7, 191 1, Harris 

 10987. 



19. UNDESCRIBED SPECIES FROM CUBA 



Mettenia acutifolia Britton & Wilson sp. nov. 



A slender tree, 3-8 m. high, with hirsutulous twigs and petioles. 

 Leaves ovate, occasionally lanceolate, 2-6 cm. long, 1-3.4 cm - 

 broad, bluntly acuminate at the apex, rounded and equilateral 

 or nearly so at the base, obscurely reticulate-veined and more 

 or less pubescent with blackish hairs along the midrib and 

 lateral veins above, hirsutulous on the midrib and lateral veins 

 beneath, the margin ciliate; flowers unknown; valves of the cap- 

 sule with crowded conic or subpyramidal tubercles, each tubercle 

 tipped with a hair; seeds (immature) brownish black, lustrous, 4 

 mm. long, 3 mm. broad. 



Camp La Gloria, south of Sierra Moa, Oriente, Cuba, Decem- 

 ber 30, 1910, Shafer 8250. Distinguished from M. globosa (Sw.) 

 Griseb. by its spreading pubescence and by its pointed leaves. 



Clerodendron (?) calcicola sp. nov. 



A tree, 8 m. high, the branches smooth, the bark flaky in 

 narrow strips. Leaves opposite, coriaceous, ovate to ovate-elliptic, 



