Part 1, 1918] RUBIACEAE 73 
71. Rondeletia americana I. Sp. Pl. 172. 1753. 
Rondeletia dichotoma Pers. Syn. Pl. 1: 203. 1805. 
Branches slender, appressed-pilose when young; stipules triangular-acuminate, sericeous 
within, about 3 mm. long; leaves opposite, the petioles 3-4 mm. long, the blades elliptic-oblong 
or oblong-obovate, 6.5-10 cm. long, 2-4 cm. wide, acute or acuminate at the base, acute or 
short-acuminate at the apex, chartaceous, deep-green above, glabrous or minutely appressed- 
pilose, short-pilose beneath along the veins; inflorescence axillary, cymose-corymbose, many- 
flowered, short-pilose, the peduncles equaling or exceeding the leaves, the flowers short-pedi- 
cellate or sessile; hypanthium appressed-pilose; calyx-lobes 5, linear, subobtuse, as long as 
the hypanthium; corolla white, sericeous outside, the tube slender, ampliate above, 8 mm. 
long, the 5 lobes rounded, one fourth as long as the tube; anthers included, oblong-linear, 
subsessile; capsule globose, 3 mm. in diameter, short-pilose; seeds exalate. 
TYPE LOCALITY: America. 
DISTRIBUTION: Jamaica and St. Vincent. 
ILLUSTRATIONS: Plum. Pl. Am. fl. 242, f. 1; Lam. Tab. Encye. pl. 162, f. J. 
72. Rondeletia arborescens Griseb. Fl. Brit. W. Ind. 327. 1861. 
Tree, the branches stout, terete or subcompressed, grayish-brown, glabrous or nearly so, 
the internodes very short; stipules deltoid, 4-6 mm. long, acute or cuspidate, rigid, erect, 
glabrous or sparsely strigose outside, strigose within; leaves opposite, the petioles stout, 0.6—-3 
cm. long, strigose or glabrate, the blades obovate-oblong or oval-obovate, 6—13 cm. long, 3—6.2 
cm. wide, narrowly or broadly cuneate at the base, rounded or very obtuse at the apex and 
very abruptly and shortly obtuse-acuminate, thick-coriaceous, dark-green above, lustrous, 
glabrous, the venation impressed, beneath brownish, sparsely strigose along the veins or 
glabrous, the costa broad, prominent, the lateral veins prominulous, 6 or 7 on each side, sub- 
arcuate, ascending at an angle of 45° or more; inflorescence axillary, cymose-paniculate, rather 
few-flowered, 2.5—5 cm. long, the peduncles about as long as the petioles, the branches sparsely 
strigose, the flowers on pedicels 1-5 mm. long, bracts linear or subulate, 2-5 mm. long, the 
bractlets minute, subulate; hypanthium densely whitish-pubescent with minute appressed 
hairs; calyx-lobes 5, lance-oblong, 1—-1.5 mm. long, obtuse or acutish, erect or spreading; 
corolla yellowish-white, becoming brown, retrorse-pilose outside with short whitish appressed 
hairs, the tube slender, ampliate above, 3-4 mm. long, annular-thickened in the throat, the 5 
lobes rounded, spreading, about half as long as the tube, puberulent within; anthers included, 
the filaments short; capsule subglobose, bisulcate, 5-6 mm. long, dark reddish-brown, 
puberulent; seeds compressed, 2-3 mm. long, yellowish, reticulate, broadly winged, the wings 
irregularly dentate or laciniate. 
TYPE LOCALITY: Mountains of Dominica. 
DISTRIBUTION: Guadeloupe, Dominica, Martinique, and St. Vincent. 
73. Rondeletia stereocarpa Griseb. Fl. Brit. W. Ind. 327. 1861. 
Shrub or small tree, the branches very stout, terete or subangulate, grayish, glabrous or 
nearly so, the internodes very short; stipules broadly deltoid or ovate-deltoid, 5-8 mm. long, 
acute to very obtuse, mucronate, rigid, erect, glabrous outside or very sparsely appressed- 
pilose, sericeous within; leaves opposite, the petioles stout, 2—4.5 cm. long, glabrous or sparsely 
strigose, the blades obovate-oblong, obovate, or narrowly obovate-elliptic, 12.5-22 cm. long, 
5-7.5 cm. wide, attenuate at the base, abruptly or subabruptly acuminate at the apex, dark- 
green and lustrous above, glabrous or when young sparsely strigillose, the venation plane or 
impressed, beneath brownish, glabrous or sparsely strigillose, the costa stout, prominent, the 
lateral veins slender, prominent, 6 or 7 on each side, subarcuate, ascending at an angle of about 
50°, the margins plane; inflorescence axillary, paniculate, 4-11 cm. long, the branches minutely 
strigillose or glabrate, the flowers numerous, short-pedicellate; bracts linear or subulate, 3-9 
mm. long, the bractlets subulate; hypanthium densely whitish-tomentulose; calyx-lobes 5, 
narrowly triangular or lanceolate, 1.5 mm. long, acute, glabrate, erect, equaling or longer than 
the hypanthium; corolla densely retrorse-pilose outside with short whitish appressed hairs, 
