IHO lU'IilACKyK. (mADI>1:1C lAMIKV.) 



Stamens T), exscrtcd. Stvlc filiform, tliitkL'iifd al)()vc. Sli^^mu olitusc or 2-1o1jl'(1 

 Capsule coriaceous, ovoid, 2-ceIled, o]iening htculicidiillv at tiie apex, and septi- 

 eid;illy nearly to the base, many-seeded. Seeds eiicular, imbricated, winged. 

 — Trees or shrubs. Leaves oi)positc. Stij)ules solitary. Flowers white or 

 reddish. 



1. E. Caribaeum, K. & S. Smooth; In-anches slender; Laves ovatc- 

 laneeolate, acuminate ; peduncles axillary, solitary, 1-llowered ; corolla as long as 

 the leaves. — South Florida. — Shrub C°- l:i° liigh. Corolla •_' Ion;;;, fragrant. 



18. OLDENLANDIA, Plum. J5i.i ms. 



Flowers tctramerous (except No. 8). Calyx 4-toothcd, persistent. Corolhi 

 funnel-shaped, salver-shaped, or wheel-shaped, 4-lobed, valvate in the bud. 

 Stamens 4. Stigma mostly 2-lobed. Capsule roundish or obcordate, 2-cellcd, 

 o])eniiig loculicidally at tlie apex, which is often free fronx the calyx. Seeds few 

 or many, wingless. — Ciiiefly small herbs, with opposite leaves. Stipules united 

 with the petioles, sometimes fringed with bristles. Flowers small, white or i)ur- 

 plish. 



* Corolla salver-shaped. lo»(jer than the cali/x, smooth : flowers dimorphous, — some of 



them bf.arirti] exsaied stamens and an incliuhd stj/le, while others bear included 

 stame7is and an exserted style : peduncles axillary, solitary : capsule broad, free 

 at the apex. 



1. O. COBrulea, Gray. Annual or biennial, smooth; stems tufted, fork- 

 ing ; leaves lanceolate, those at the base spatulate, clustered ; peduncles elon- 

 gated, erect or spreading. (Houstonia ccerulca, L. 11. patens. Ell.) — Moist 

 banks, Florida to Mis.sissippi, and northward. February and INIarch. — Stems 

 3' -6' high. Corolla blue or white, yellow in the throat. 



2. O. serpyllifolia, (iray. Perennial, smooth ; stems (iliform, 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, J//t7ijr.) — 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, Michx.) — Sandy soil near the coast, Florida to South Carolina, and west- 

 ward. February and March, and bearing apetalous fruiting flowers through the 

 year. 



* ♦ Corolla funnel-shaped : flowers diaciously dimorphous : capsule free at the apex : 



stem 4-anrjled: flowers in terminal cymes. 



4. O. purpurea, Gray. Pubescent ; stem branching, erect ; leaves ovate 

 or lanceolate-ovate, sessile, 3 - 5-ribbcd ; calyx-lobes longer than the capsule; 

 corolla ))ur]jle or nearly white, slightly hairy within ; capsule roundish. (Hous- 

 tonia purpurea, Z.) — Woods, Mississippi to North Carolina, and northward. 

 June and July. — Stems 8'- 12' high. Calyx-lobes occasionally 3-4 times the 

 length of the capsule. 



