Britton: Studies of West Indian plants 465 



141Q2). Type sheet in the herbarium of the Field Columbian 

 Museum. 



Chamaesyce Jenningsii Millspaugh, sp. nov. 



Prostrate, spreading from a low rootstock; stems many, di- 

 varicately branching, internodes about 1.5-3 cm.; branches 2 to 

 many at each swollen node, wiry, divergently forking; leaves 

 oval to ovate, 5X3-8X4 mm., glabrous above, finely long silvery- 

 pubescent beneath, obliquely cordate, blunt, shallowlybut sharply 

 serrate throughout the margins. Inflorescence solitary in the 

 terminal forks and axils; involucres long-turbinate, glabrous with- 

 out, hairy within; pedicels about twice the length of the tube; 

 lobes triangular; sulcus large, deep, triangular, the fundus un- 

 occupied; glands nearly circular, flattened to the walls of the in- 

 volucre; appendages none, or rarely merely a marginal line of the 

 same color and texture as the glands; bracteoles as many as the 

 stamens, ligulate, transparent. Capsule glabrous, ovoid; carpels 

 strongly keeled; seeds ovate-quadrangular, 1.2X1 mm., angles 

 sharp, facets sharply and anastomosely transverse ridged including 

 deep, quadrangular pits. 



Vivijagua {0. E. Jennings 621); type in the herbarium of the 

 Carnegie Museum, Pittsburgh, Pennsylvania. Also in coastal 

 sands at the same place {Britton & Wilson 14690). 



Tapura obovata Britton & Wilson, sp. nov. 



A tree 10 m. tall; young twigs and petioles minutely strigillose; 

 leaves obovate, 3.5-7 cm. long, 1.5-4.4 cm. broad, rounded at the 

 apex, cuneate to rounded-cuneate at the base, dull above, lustrous 

 beneath and reticulate-veined, glabrous, short-petioled ; flowers 

 short-pedicelled ; calyx-lobes 5, cilia te, sparingly appressed-pilose 

 on the outside, the two outer lobes smaller than the three inner 

 ones, broadly oblong-elliptic to oval, 2.5-3.2 mm. long, 2-2.2 mm. 

 broad, the three inner lobes oval to suborbicular, 3.4-3.8 mm. long, 

 3-3.3 mm. broad; corolla-lobes 5, unequal, the three smaller lobes 

 spatulate-obovate, 4-4.6 mm. long, 1.2 mm. broad, the two larger 

 lobes spatulate, 4.6-5 mm. long, 2.2-2.5 mm - broad; filaments 

 lanceolate-oblong to oblong; ovary pilose; style filiform, pilose, 

 3-lobed. 



Savanna, Vivijagua {Britton & Wilson 15607, type) ; coastal 

 plain, San Juan {Britton & Wilson 15524). 



Calyptranthes pinetorum Britton & Wilson, sp. nov. 



A depressed, glabrous, much-branched shrub 6 dm. high or less, 

 3-10 dm. broad, the twigs stout, gray, terete or nearly so. Leaves 



