Part 1, 1918] RUBIACEAE is 
times leaf-like, the others scale-like, lanceolate, 1-3 mm. long; pedicels 1—2.3 cm. long; hypan- 
thium 6-7 mm. long, 4 mm. thick; calyx 1-1.5 mm. long; corolla 2.5—3.5 em. long, reddish, the 
tube 5 mm. thick, the lobes ovate, acute, scaberulous outside; filaments 11 mm. long; anthers 
6 mm. long; style 18 mm. long; capsule 12-14 mm. long, 7-8 mm. broad, 6 mm. thick; seeds 
0.5-0.7 mm. long, yellowish-brown. 
TyPE Locality: Near Pétionville, Haiti, at an altitude of 500 to 600 meters. 
DISTRIBUTION: Hispaniola. 
2. Picardaea cubensis (Griseb.) Britton; Urban, Symb. Ant. 7: 391. 
1912. 
Macrocnemum cubense Griseb. Cat. Pl. Cub. 124. 1866. 
Shrub; branches brownish-gray, glabrous; stipules annular, connate, cuspidate, I1—-1.5 mm. 
long, glabrous, the cusp about 1 mm. long; petioles 0.5—2 cm. long, slender, glabrous; leaf- 
blades obovate or obovate-elliptic, broadest slightly above the middle, 6-15 cm. long, 2-6 cm. 
wide, cuneate at the base, acute or acutish at the apex, lustrous above and glabrous, dull 
beneath and glabrous except for tufts of yellowish crispate hairs in the axils of the veins, 
the costa prominent, the lateral veins 7-10 on each side, nearly straight; peduncles stout, 
about 4 cm. long, glabrous, the inflorescence about 5 cm. long, the bracts scale-like, deltoid, 
about 1 mm. long; pedicels 1-2 cm. long; hypanthium 6-8 mm. long, about 4 mm. thick; 
calyx about 1.5 mm. long; corolla 3.5—4 cm. long, ochroleucous, the lobes ovate, subobtuse; 
capsule about 1 cm. long. 
TYPE LOCALITY: Eastern Cuba. 
DISTRIBUTION: Eastern Cuba. 
4. RUSTIA Klotzsch, in Hayne, Arzn. Gew. 14: pl. 14. 1846. 
Henlea Karst. Fl. Columb. 1:38. 1858. 
Glabrous shrubs or trees; branchlets terete or obtusely quadrangular. Leaves opposite, 
petiolate, the blades large. Stipules intrapetiolar, large, caducous. Flowers of medium 
size, showy, arranged in terminal panicles; pedicels bracteolate; hypanthium campanulate or 
turbinate; calyx short, 5-dentate or 5-lobate, persistent; corolla funnelform or campanulate, 
the throat glabrous or pilose, the 5 lobes valvate, short, spreading or recurved. Stamens 
5, inserted on the corolla-tube below the throat; filaments subulate or triangular; anthers 
basifixed, included or exserted, dehiscent by a terminal pore or slit. Disk terete or sulcate. 
Ovary 2-celled; style filiform, exserted, clavate or bilobate at the apex; ovules very numerous; 
placentae bipartite, attached vertically to the septum. Capsule thick-coriaceous, oblong- 
ovoid or clavate, hemispheric at the apex, loculicidally bivalvate. Seeds numerous, minute, 
horizontal, crowded; testa membranaceous, sometimes marginate; endosperm fleshy; embryo 
clavate, bifid. 
Type species, Rustia Pohliana Klotzsch. 
1. Rustia occidentalis (Benth.) Hemsl. Biol. Centr. Am. Bot. 2: 14. 
1881. 
Exostema occidentale Benth. Bot. Voy. Sulph. 104. 1844. 
Shrub or small tree, glabrous throughout; branches brownish-gray; stipules lance-tri- 
angular, 5-8 mm. long, attenuate; petioles slender, 1-2.5 cm. long, semiterete; leaf-blades 
oblanceolate, 10-19 cm. long, 2.5—5 cm. wide, rather abruptly acuminate to attenuate at the 
apex, attenuate to the base, subcoriaceous, concolorous or nearly so, somewhat lustrous on the 
upper surface, the costa slender, prominent beneath, the lateral veins prominent, 9-15 on each 
side, arcuate, laxly anastomosing near the margin, the veinlets laxly reticulate; peduncles 
stout, 1-3 cm. long; panicles few-flowered, 6-9 cm. long, narrowly pyramidal, the branches 
compressed; bracts small, triangular; bractlets minute; pedicels stout, 1-13 mm. long, or 
sometimes wanting; hypanthium turbinate, 4-5 mm. long; calyx about 1 mm. long, obscurely 
dentate; corolla salverform, the tube 6-7 mm. long, 3 mm. thick at the base, constricted above, 
