(00 tonia ia purpurei, Z: 
180 RUBIACEX. (MADDER FAMILY.) 
Stamens 5, exserted. , Style filiform, thickened above. Stigma obtuse or 2-lobed. - 
Capsule coriaceous, ovoid, 2-celled, opening loculicidally at the apex, and septi- 
cidally nearly to the base, many-seeded. Seeds circular, imbricated, winged. 
— Trees or shrubs. Leaves opposite. Stipules solitary. Flowers white or 
reddish. 
1. E. Caribæum, R. & S. Smooth; branches slender; leaves ovate- 
. lanceolate, acuminate ; peduncles axillary, solitary, 1-flowered ; corolla as long as 
the leaves. — South Florida. — Shrub 6°-12° high. Corolla 2! long, fragrant. 
18. OLDENLANDIA, Plum. Bruxrs. 
Flowers tetramerous (except No. 8). Calyx 4-toothed, persistent. Corolla 
funnel-shaped, salver-shaped, or wheel-shaped, 4-lobed, imbricated in the bud. 
Stamens 4. Stigma mostly 2-lobed. Capsule roundish or obcordate, 2-celled, 
opening loculicidally at the apex, which is often free from the calyx. Seeds few 
or many, wingless. — Chiefly small herbs, with opposite leaves. Stipules united xn i 
with the petioles, sometimes fringed with bristles. Flowers small, white or pur- 
plish. 
* Corolla salver-shaped, longer than the calyx, smooth: flowers dimorphous, — some of 
them bearing exserted stamens and an included style, while others bear included 
stamens and an ezserted style: peduncles axillary, solitary: capsule broad, free 
at the apex. 
1, O. coerulea, Gray. Annual or biennial, smooth; stems tufted, fork- 
ing; leaves lanceolate, those at the base spatulate, difteri peduncles elon- 
gated, erect or spreading. (Houstonia ccrulea, Z. H. patens, Fil.) — Moist 
banks, Florida to Mississippi, and northward. February and March. — Stems 
3'—6' high. Corolla blue or white, yellow i in the throat. 
5 2. Oo. serpyllifolia, Gray. Perennial, smooth; stems filiform, prostrate, 
branching ; leaves ovate or roundish, abruptly contracted into a long and slen- 
der petiole ; peduncles elongated, terminal and in the forks of the stem. (Hous 
tonia serpyllifolia, Michx.) — High mountains of North Carolina. — Stems 6'- 
12’ long. Peduncles 1'— 2! long. 
3. O. rotundifolia, Gray. Perennial; stems diffuse, creeping; leaves - 
round or oval, fleshy, abruptly contracted into a short petiole; peduncles mostly 
shorter than the leaves, recurved in fruit; flowers white. (Houstonia rotundi- 
folia, Michz.) — Sandy soil near the coast, Florida to South Carolina, and west 
ward. February and March, and bearing apetalous fruiting flowers through the 
year. < 
** estem shaped : lowers diaciously dimorphous : cape free atthe apez 
SEN stem 4-angled : flowers in terminal cymes. l 
hs or purpurea, Gray. Pubescent; stem branching, erect; leaves ovate ; 
or lanceolate-ovate, sessile, 3- 5-ribbed; calyx-lobes longer than the capsule; 
corolla purple or nearly white, slightly hairy within; capsule roundish. (Hous- 
