Part 1, 1918] RUBIACEAE 23 
2.5-3 mm. long, 1 mm. broad at the apex, green, shallowly bisulcate, angulate, minutely 
scaberulous or glabrate; seeds minute, subangulate, blackish-brown, reticulate. 
TYPE LOCALITY: Eastern Cuba. 
DISTRIBUTION: In moist soil, Bahamas, Cuba, and Guadeloupe; Yucatan. 
12. Oldenlandia ovata S. Wats. Proc. Am. Acad. 18: 97. 1883. 
Annual, procumbent, diffusely branched, the branches very slender, 1-2 dm. long, glabrous, 
the internodes mostly longer than the leaves; stipules minute, bicuspidate; petioles slender, 
5 mm. long or shorter, scaberulo-ciliolate; leaf-blades ovate or ovate-deltoid, 7-13 mm. long, 
3-9 mm. wide, acutish to acuminate at the apex or rarely rounded and mucronulate, rounded 
to truncate at the base and abruptly short-decurrent, thin, hirsutulo-scaberulous on the upper 
surface or glabrate, slightly paler beneath and glabrous, the costa very slender, the lateral 
veins obsolete; flowers axillary, mostly solitary, sometimes on 2-flowered peduncles, the pedicels 
filiform, 4-15 mm. long, glabrous, ascending or spreading; hypanthium less than 1 mm. long, the 
calyx-lobes about as long, ovate-oblong, acute or acutish, remote in fruit; corolla salverform, 
about 3 mm. long, white, the tube about three times as long as the calyx-lobes, the lobes 
narrowly triangular, acute, papillose within; anthers short-exserted; capsule hemispheric or 
subglobose, 1.5 mm. high, smooth, glabrous; seeds minute, angulate. 
TYPE LOCALITY: Guajuco, Nuevo Leén. 
DISTRIBUTION: Tamaulipas and Nuevo Leon. 
13. Oldenlandia capillipes Griseb. Cat. Pl. Cub. 130. 1866. 
Prostrate annual (?), the stems numerous, very slender, 1-4 dm. long, simple or sparsely 
branched, glabrous, the internodes much longer than the leaves; stipules minute, bicuspidate; 
leaves sessile or nearly so, the blades mostly elliptic, sometimes oval or lanceolate, 2.5—9 mm. 
long, 1-3.5 mm. wide, obtuse or acute at the apex, obtuse or acute at the base, thin, minutely 
scaberulous or glabrate on the upper surface, slightly paler beneath and glabrous, the lateral 
veins mostly obsolete; flowers axillary and terminal, solitary, rarely on 2-flowered peduncles, 
the pedicels slender, 4-12 mm. long, glabrous; hypanthium less than 1 mm. long, the calyx-lobes 
mostly shorter, triangular, acutish, remote in fruit; corolla salverform, white, about 4 mm. 
long, the tube several times as long as the calyx-lobes; capsule hemispheric or subglobose, 
2 mm. high, bisulcate, smooth, glabrous; seeds minute, angulate. 
TYPE LOCALITY: Western Cuba. , 
DISTRIBUTION: Known only from the type locality. 
EXCLUDED SPECIES 
OLDENLANDIA GALIOIDES Willd.; Schultes, in R. & S. Syst. Veg. Mant. 3: 144. 1827. 
According to Urban (Symb. Ant. 4: 581. 1911), this is Mollugo verticillata L. 
OLDENLANDIA UMBELLATA L. Sp. Pl. 119. 1753. Reported from Mexico by De Candolle 
(Prodr. 4: 426. 1830); the report was probably based upon an incorrect identification. 
12. CLAVENNA Neck. Elem. 2: 145. 1790. 
Dunalia Spreng. Pug. 2:25. 1815. Not Dunalia R. Br. 1814. 
Lucya DC. Prodr. 4: 434. 1830. 
Clavennaea Kuntze; Post & Kuntze, Lex. Gen. Phan 128. 1903. 
Prostrate perennial herbs with tuberous-thickened roots, the stems slender, cespitose. 
Stipules minute, interpetiolar, dentate or setiferous. Leaves opposite, petiolate, the blades 
small, broad. Flowers solitary, axillary, pedicellate, white; hypanthium hemispheric, hispidu- 
lous; calyx 4- or rarely 5-dentate, the teeth alternating with the same number of smaller 
ones, persistent; corolla funnelform-campanulate, 4- or rarely 5-lobate, the lobes short, obtuse, 
valvate. Stamens 4 or rarely 5, inserted in the corolla-tube; filaments short; anthers small, 
dorsifixed. Disk inconspicuous. Ovary 2-celled; style short, the 2 branches obtuse; ovules 
few, inserted on placentae adnate to the septum. Capsule one fourth superior, broadly hemi- 
spheric, subdidymous, coriaceous, 2-celled, few-seeded, loculicidally bivalvate, the valves re- 
