466 Britton: Studies of West Indian plants 



opposite, thick-coriaceous, ovate to orbicular, flat, 1-3.5 cm. long, 

 rounded or obtuse at the apex, cordate or subcordate at the base, 

 bright green and shining above, pale green and dull beneath, 

 densely punctate, the midvein prominent, the lateral veins faint, 

 the stout petioles 1-2 mm. long; peduncles rather stout, somewhat 

 longer than the leav^es; inflorescence cymose, few- to several-flow- 

 ered ; young fruit sessile, subglobose, 2 mm. in diameter, the calyx- 

 limb 2 mm. broad. 



Pine-lands, central districts. Type from north of Los Indios 

 (0. E. Jennings 3 go) . 



Related to C. nummularia Berg, of Hispaniola, C. Maxoni 

 Britton & Urban of Jamaica, and C. Boldinghi Urban of St. Martin. 



Evolvulus arenicola Britton & Wilson, sp. nov, 



A diminutive perennial, with a slender, woody root, the few or 

 solitary, simple or few-branched stems slender, appressed-pu- 

 bescent, 2-5 cm. long, ascending or nearly prostrate. Leaves 

 ovate to elliptic, 9-15 mm. long, puberulent or glabrate above, 

 appressed-pubescent beneath, mostly obtuse or rounded at both 

 ends, the midvein faint, the lateral veins wholly obscure, the pu- 

 bescent petioles 1-2 mm. long; flowers i or 2 at the ends of the 

 stems or branches; pedicels 5-8 mm. long, pubescent; sepals linear- 

 lanceolate, acuminate, villous, 5 mm. long; corolla white, rotate, 

 9-12 mm. broad; obscurely lobed ; stamens about one-half as long 

 as the corolla; styles deeply 2-cleft; capsule subglobose, shorter 

 than the sepals. 



White sand, vicinity of Los Indios {Britton & Wilson 141 go). 



Gerardia pinetorum Britton & Wilson, sp. nov. 



Acaulescent; leaves elHptic-ovate to elliptic, 1.5-2 cm. long, 

 5-8 mm. broad, rounded at the apex, cuneate or somewhat rounded 

 at the base, hispidulous above and below with jointed hairs; 

 petioles 1-1.5 cm. long, densely hispidulous; scape erect, 4-8 cm. 

 high, more or less hispidulous with jointed hairs, the spikes few- 

 flowered, 1-2 cm. high, the bracts lanceolate, 4-5 mm. long, 

 ciliolate, long-acuminate; calyx-lobes subequal, narrowly lanceo- 

 late, 4-4.5 mm. long, 0.5-0.8 mm. broad, ciliolate; corolla rose- 

 pink, glabrous, the tube cylindric, 5-5.5 mm. long, the limb 

 subequally 5-lobed, the lobes broadly obovate to somewhat oval- 

 obovate, 4.5-8 mm. long, 2.5-5 mm. broad. 



Along the Los Indios River above Los Indios (0. E. Jennings 



456)- 



