, 
1110 RUBIACEAE 
axillary or terminal cymes. Hypanthium clavate or turbinate. Sepals 5, persistent. 
Corolla mostly white, broadly funnelform, pubescent at the throat: lobes 5, obtuse, valvate. 
Stamens 5, adnate to the throat of the corolla. Ovary 2-celled : styles partially united. 
Ovules several in each cavity. Capsule slightly 2-lobed, membranous, included in the 
hypanthium, loculicidal. Seeds numerous, angled. Testa smooth. Endosperm fleshy. 
1. Pentcdon Halei (T. & G.) A. Gray. Plant tender, glabrous. Stems weak, 
branching and diffuse, decumbent, often creeping: leaf-blades oblong to oval or oblong- 
lanceolate, 1-5 cm. long, acute or abruptly acuminate, entire, narrowed into margined 
petioles : peduncles shorter than the leaves: hypanthium clavate, shorter than the pedicel, 
4-6 mm. long at maturity: sepals triangular-lanceolate, shorter than the hypanthium: 
corolla about 2 mm. long, surpassing the sepals, glabrous within: capsules 3-4 mm. long. 
In swampy grounds, Florida to Louisiana. Spring to fall. 
5. EXOSTEMA L. C. Rich. 
Shrubs or trees, with terete branches. Leaves opposite : stipules interpetiolar, entire 
or 2-cleft. Flowers perfect, solitary and axillary, or in terminal panicles. Hypanthium 
clavate, turbinate or obovate. Sepals 5, narrow. Corolla white, salverform : tube elon- 
gated : lobes 5, narrow, imbricated, 2 exterior. Stamens 5, adnate to the base of the 
corolla-tube. Disk annular. Ovary 2-celled: styles united, filiform : stigma entire or 2- 
lobed. O*ules numerous in each cavity, ascending. Capsule elongated, 2-celled, open- 
ing by 2 septicidal entire or 2-parted valves. Seeds numerous in each cavity. Testa mem- 
branous, produced into wings. Endosperm fleshy. 
1. Exostema Caiibaéum (Jacq.) R. & S. A shrub or small tree, 2-8 m. tall, the 
foliage glabrous. Leaf-blades oblong to elliptic, 2-6 em. long, acute or acuminate at both 
ends, entire, often slightly undulate ; petioles 5-10 mm. long: pedicels shorter than the 
pero: hypanthium 4-7 mm. long during anthesis : sepals triangular or triangular-subu- 
ate, shorter than the hypanthium: corolla white or rose-tinged ; tube 3.5-4 cm. long; 
lobes narrowly linear, shorter than the tube: filaments exserted : capsules 10-12 mm. long, 
elliptic: seeds about 3 mm. long, winged. 
In sand, Keys of Florida. Also in the West Indies and Mexico. 
* 
6. GÉNIPA L. 
Shrubs or trees, with terete branches. Leaves opposite: blades leathery, lustrous : 
stipules deciduous. Flowers perfect, in short-peduncled axillary cymes. Hypanthium 
turbinate or campanulate. Calyx truncate or with 5-6 obtuse sepals, persistent. Corolla 
white or yellow, salverform or nearly rotate: tube pubescent in the throat: lobes 5-6, 
spreading, leathery, contorted. Stamens 5-6, adnate to the mouth of the corolla-tube : 
anthers sessile, narrow, the connective produced beyond the sacs. Disk cup-like. Ovary 
1-2-celled : styles stout. Ovules numerous in each cavity. Fruit a thick pulpy berry. 
Seeds numerous, angled, flattened. Testa somewhat fibrous. Endosperm cartilaginous. 
1. Genipa clusiifdlia (Jacq.) Griseb. A branching shrub, 1-2 m. tall, the foliage 
glabrous, turning black in drying. Leaves clustered ; blades leathery, obovate to cuneate, 
5-15 cm. long, rounded or retuse at the apex, lustrous, often mucronate, entire, short 
petioled : hypanthium 8-10 mm. long, turbinate : sepals subulate, shorter than the hypan 
thium : corolla fleshy, glabrous ; tube 1.5-2 cm. long ; lobes lanceolate or oblong-lanceo M 
shorter than the tube : berries ovoid to obovoid, 5-7 cm. long. 
On the coast and Keys of southern Florida. Also in the Bahamas and West Indies. 
7. RÁNDIA L. 
Armed or unarmed shrubs or trees, with erect or climbing stems. Leaves opposite : 
blades often leathery. Flowers perfect, solitary, usually axillary. Hypántbium io ee 
obovoid or ovoid, terete or ribbed. Sepals 4, very low, or obsolete. Corolla white, yello : 
or pink, funnelform, salverform or campanulate : tube variable in length : lobes 5, convo 
lute. Stamens 5, adnate to the throat of the corolla: filaments short or nearly nr ae. 
Disk annular or cushion-like. Ovary 2-celled or very rarely 3-4-celled : styles rarely já ft 
tinct, usually united, stout, terminating in a club-shaped, spindle-shaped or rar ely jenes 
stigma. Ovules numerous, or sometimes 2 or more in each cavity, immersed in pacem 
