36 RUBIACE^. Hamelia. 



1. H. patens (Jacq.) : leaves ternate, oval-oblong, acuminate at each end, 

 villous-pubescent underneath ; cymes colored, di-trichotomous, in a terminal 

 pedunculate umbel ; corolla cylindrical. DC. — Jacq. stirp. Amer. I. c. ; Smith, 

 exot. hot. t. 24 ; DC. prodr. 4. p. 441. H. coccinea, Sivartz, prodr. p. 

 46. DuhameUa patens, Pers. syn. \. p. 203. 



Key West, Florida, Mr. Bennett! — A shrub 8-10 feet high, with a 

 trunk 3-4 inches in diameter ; the younger branches minutely pubescent. 

 Leaves 2-4 inches long, and an inch or more in diameter, somewhat glabrous 

 above. Cymes usually forked, with the flowers sessile and unilateral on the 

 divisions; the common peduncle trifid. Flowers bright red, very handsome. 

 Berry about one-fourth of an inch long. Seeds oval, scrobiculate, only one 

 (in our specimen) ripening in each cell. 



Tribe V. EUCINCHONEiE. (Cinchonacea;, DC.) 



Fruit capsular, 2-celled ; the cells many-seeded. Seeds winged. - 

 Albumen fleshy. — Trees or shrubs. Stipules between the petioles, 



14. EXOSTEMMA. DC. diss. 1806 ; A. Rich. mem. I. c. p. 280. 

 Exostema, Pers. (§ of Cinchona), L. C. Richard. 

 Calyx-tube obovate ; the limb 5-toolhed. Corolla with a long terete tube, 

 the segments of the 5-parted limb linear, revolute, valvate in aestivation. 

 Stamens 5, inserted into the corolla near the base, much exserted : anthers 

 narrowly linear. Style filiform, clavate at the summit : stigma entire or 

 somewhat 2-lobed. Capsule coriaceous, opening at the sunmiii by septici- 

 dal dehiscence. Seeds flat, Avith a circular winged margin, retrorsely im- 

 bricated. — Trees or shrubs of tropical America, (the bark febrifugal or some- 

 what emetic ; but destitute of Quinia and Cinchonia, according to St. 

 Hilaire), usually glabrous. Stipules one on each side. Peduncles axillary 

 or terminal. 



1. E. Carihreum (Rcem. & Schult.) : leaves ovate-lanceolate, acuminate, 

 glabrous; pedicels axillary, 1-flowered, about the length of the petiole; teeth 

 of the calyx very short.— -Rceni. 6f Schult. syst. 5. p. 18; DC frodr. A. p. 

 359. Cinchona Caribsea, Jacq. stirp. Amer. t. 179, /. 65, S^'ohs. 2. t. 17 ; 

 Geertn.fr. t. 33 ; Lamb. Cinch, t. 4 ; Andr. Bot. rep. t. 481. C. Jamaicensis, 

 Wright, in phil. trans. 67. p. 504, t. 10. 



Key West, Mr. Blodgett ! — A glabrous shrub. Leaves li-2 inches long, 

 somewhat coriaceous. Stipules broad and very short, with a subulate point. 

 Flowers crimson, odorous, showy. Pedicels half an inch long. Calyx-teeth 

 rather acute. Corolla nearly 2 inches long; the tube about the length of the 

 linear segments. Anthers half an inch in length and very slender. Style 

 much exserted : stigma entire. — The bark of this plant is used in the West 

 Indies as a substitute for Cinchona bark. 



15. PINCKNEYA. Michx.fl. 1. p. 103, t. 13 ; A. Rich. mem. I. c. p. 277. 



Calyx-tube oblong-turbinate; four of the segments of the deciduous 5- 

 parted limb linear-lanceolate, the fifth usually dilated into a large colored 

 leaf. Tube of the corolla cyUndrical ; the lobes of the 5-parted limb linear- 

 oblong, recurved-spreading, somewhat imbricate in estivation. Stamens 5, 

 inserted into the corolla near the base, exserted : anthers oblong. Style fill- 



