RUBIACEA, 13 
3. Coutarea mexicana, Zucc. et Mart. ex DC. Prodr. iv. p. 350. 
MEXIco. 
This is probably the Portlandia mexicana described below. 
4. Coutarea speciosa, Aubl. Pl. Gui. i. p. 314, t. 122. 
PanaMA, on the beach near Panama (S. Hayes, 181).—CoLomBia; VENEZEALA ; TRINI- 
DAD; GuIANA; Braziu. Hb. Kew. 
5. Coutarea, sp. 
SoutH Mexico, Vera Cruz (Gouin), Yucatan (Linden, 1263 bis). Hb. Kew. 
Both of these specimens may belong to_the widely dispersed C. speciosa. 
11. EXOSTEMMA. 
Exostemma, Rich. in Humb. et Bonpl. Pl. Aiquin. i. p. 131, t. 38 (Zxostema) ; Benth. et Hook. 
Gen. Plant. ii. p. 42. 
Shrubs or small trees. About twenty species, chiefly concentrated in the West 
Indies, but extending from Florida and Mexico southward. 
1. Exostemma canescens, Bartl. ex DC. Prodr. iv. p. 359. 
Mexico; GuatemaLa (Skinner)? Hb. Kew. 
2. Exostemma caribzeum, Reem. et Schult. Syst. v. p. 18. 
Cinchona caribea, Jacq. Amer. t. 179. fig. 65 ; Obs. iu. t. 17. 
Fiorma.—SoutH Mexico, Zimapan (Coulter, 224); Nicaragua, west side (rsted). 
—And common in the West Inpizs. Hb. Kew. 
8. Exostemma coulteri, Hook. fil. in Hemsl. Diag. Pl. Nov. pars altera, p. 32. 
Glabrum, ramis gracilibus teretibus, foliis confertis coriaceis nitidis ovato-oblongis acuminatis 
basi cuneatis, floribus parvis cymoso-corymbosis brevissime pedicellatis, cymis paucifloris termi- 
nalibus, calycis dentibus subulatis persistentibus, corolla fere cylindrica brevissime lobata, 
lobis rotundatis vix patentibus, staminibus inclusis, capsula oblonga dentibus calycinis coronata, 
seminibus utrinque alatis. 
Frutex glaberrimus, ramis gracilibus, dense foliatis. Folia petiolata, coriacea, nitida, ovato- 
oblonga, 2—24-pollicaria, acuminata, acutiuscula, basi cuneata, petiolo gracili, circiter 3 lin. 
longo; stipule subulate, decidue. Flores parvi, brevissime pedicellati, cymoso-corymbosi, 
bracteati; corymbi pauciflori, folia vix equantes, terminales; bractez minutissime; calycis dentes 
subulati, persistentes ; corolla fere cylindrica, 6-8 lin. longa, brevissime lobata, lobis rotundatis, 
erectis vel vix patentibus; stamina inclusa. Capsula oblonga, 2-3 lin. longa, calycis dentibus 
coronata, seminibus utrinque alatis. 
Mexico, Zimapan (Coulter, 209). Hb. Kew. 
Easily distinguished from all previously described species by its shortly lobed corolla 
and included stamens. 
4. Exostemma longicuspe, CErsted in Vidensk. Meddel. 1852, p. 26. 
Costa Rica, near Puntarenas (rsted). Hb. Kew. 
