Britton: Studies of West Indian plants 453 



elliptic, 6-10 mm. long, subcoriaceous, entire, 7 mm. wide or less, 

 abruptly acute, obtuse, or some of them rounded at the apex, 

 narrowed at the base, glabrous, pinnately few-veined, the gla- 

 brous or somewhat pubescent petioles 0.5-1 mm. long ; inflorescence 

 corymbose-cymose, several-flowered; pedicels very slender, spar- 

 ingly pubescent, 1-2 mm. long; fruit narrowly obpyramidal, 

 sparingly papillose or glabrous, 2 mm. long, I mm. thick at the 

 top, evenly gradually narrowed to the rounded base, the per- 

 sistent calyx-lobes ovate or ovate-lanceolate, about 0.5 mm. long. 



Coastal thickets, vicinity of Siguanea, Isle of Pines, Cuba 



(Britton & Wilson 14942.) 



3. Machaonia trifurcata Urban, Symb. Ant. 5: 512. 1908 



Cuba (C. Wright 2760). Referred by Grisebach to the 

 Jamaican M. cymosa Griseb., but clearly different from that 

 species. Not found by us. A part of C. Wright 433 in the her- 

 barium of the New York Botanical Garden has the characters of 

 this species. 



1 



4. Machaonia microphylla Griseb. Mem. Am. Acad. II. 8: 



510. 1862 



Rocky hills at lower elevations in dry districts, province of 

 Oriente. 



A barren specimen, collected in the palm barren near the city 

 of Santa Clara, Santa Clara province (Britton & Wilson 6130) is 

 doubtfully referred to this species. 



5. Machaonia calcicola sp. no v. 



?Spermacoce spinosa Jacq. Stirp. Am. 21. 1763. Not L. 1762. 



Not Machaeonia spinosa C. & S. 



?Spermacoce havanensis Jacq.; Gmel. Syst. 234. 1796. 



A much-branched shrub or small tree up to 3 m. high, the 

 slender twigs densely puberulent, bristle-tipped. Leaves ovate or 

 rhombic-ovate to elliptic or oblong-lanceolate, 6-15 mm. long, 

 acute, short-acuminate, or some of them obtuse at the apex, nar- 

 rowed or obtuse at the base, glabrous, pinnately few- veined, the 

 short petioles puberulent; inflorescence corymbose-cymose. several- 

 to many-flowered ; pedicels slender, pubescent, 1-2 mm. long, calyx 

 densely pubescent, its ovate or ovate-lanceolate lobes as long as 

 the tube or somewhat shorter; corolla white or yellowish, about 

 1 mm. long, its ovate-oblong obtuse lobes about as long as the 



