Part 1, 1918] RUBIACEAE 49 
XIV. HyrpoLEucAE 
Leaves glabrous above, even when young, or sparsely pubescent along 
the costa. 
Leaf-blades mostly 1-2 cm. long; peduncles usually 1-flowered. 
Leaf-blades oval, obtuse or rounded at the apex. 95. R. venosa. 
Leaf-blades oblong, acute or acutish at the apex. . 96. R. bicolor. 
Leaf-blades mostly 3 cm. long or longer; peduncles few-flowered. 
Pubescence of the branches retrorse; stipules acute; leaf-blades 
rounded at the apex. 97. R. lomensis. 
Pubescence of the branches antrorse; stipules cuspidate; leaf-blades 
acute or short-acuminate. 98. R. nipensis. 
Leaves finely and densely pubescent above when young, the pubescence 
usually persistent. 
Leaf-blades mostly 0.5—1 cm. long. 
Calyx-lobes about 2.5 mm. long, acute; corolla-lobes glabrous 
within. 99. R. Fuertesii. 
Calyx-lobes 1-1.5 mm. long, obtuse; corolla-lobes pubescent 
within. 
Leaf-blades narrowly obovate or elliptic, twice as long as broad. 100. R. Rugelit. 
Leaf-blades broadly oval or suborbicular, nearly as broad as 
101. R. hypoleuca. 
long. 
Leaf-blades mostly 1.5—3 cm. long or longer. 
Calyx-lobes oval or broadly ovate, about as long as broad, rounded 
or obtuse at the apex. 
Pubescence of the branches retrorse; leaf-blades broadly oval; 
petioles 4-5 mm. long. 102. R. baracoensis. 
Pubescence of the branches antrorse; leaf-blades oval-oblong or 
obovate; petioles 1-3 mm. long. 
Leaf-blades acute at the base, glabrate beneath in age ex- 
cept along the veins. 103. R. insularis. 
Leaf-blades rounded or very obtuse at the base, persistently 
whitish-tomentulose beneath. 104. R. camarioca. 
Calyx-lobes linear or lance-triangular, longer than broad, acute. 
Leaf-blades large, 3.5-6 cm. long, obovate-elliptic. 105. R. Brauseana. 
Leaf-blades small, usually less than 3 cm. long. 
Leaf-blades oval or elliptic-oval. 106. R. Berteriana. 
Leaf-blades narrowly obovate or oblong. 107. R. Combsii. 
XV. CORREIFOLIAE 
A single species. 108. R. correifolia. 
Unplaced species. 109. R. camagueyensis. 
I. Amoenae. Leaves usually large, more or less pubescent, rarely glabrous. Stipules 
usually large, foliaceous, and reflexed. Inflorescence terminal, cymose-paniculate or cymose- 
corymbose, many-flowered, broad; flowers 5-parted; calyx-lobes small, or large and foliaceous; 
corolla large, glabrous or antrorse-pilose outside, densely yellow-bearded in the throat. Cap- 
sule globose, 7 mm. in diameter or smaller. Seeds usually exalate. 
1. Rondeletia suffrutescens Brand. Univ. Calif. Publ. Bot. 6: 70. 
1914. 
Shrub, the branches terete, slender, sparsely pilosulous when young, the internodes elon- 
gate; stipules linear or triangular-lanceolate, 3-5 mm. long, attenuate, ascending, persistent, 
green, strigose; leaves opposite, the petioles slender, 2-4 mm. long, strigose or pilosulous, the 
blades ovate, oval-ovate, or lance-oblong, 4.5—10 em. long, 1.5—3.5 cm. wide, rounded or abruptly 
short-acuminate at the base, subabruptly long-acuminate or attenuate at the apex, very thin, 
bright-green, sparsely setose-pilose on the upper surface, copiously so beneath, the hairs short, 
the costa slender, prominent, the lateral veins very slender, 5—8 on each side, arcuate-ascending; 
inflorescence terminal, cymose-corymbose, the peduncles slender, 4-5 cm. long, the cymes 
mostly 3-flowered, the pedicels slender, 5-15 mm. long; hypanthium glabrous, subglobose, 
about 2 mm. long; calyx-lobes 5, linear-lanceolate, 6-14 mm. long, attenuate, bright-green, 
sparsely setose-ciliate with appressed hairs; corolla glabrous outside, the tube 17 mm. long, 2 
mm. thick, the throat densely yellow-pilose, the 5 lobes oblong or oval, 6-7 mm. long; anthers 
and style included. 
TYPE LocaLiIty: Cerro del Boquer6én, Chiapas. 
DISTRIBUTION: Known only from the type locality. 
