184 TREES AND SHRUBS. 



horny, regular or ruminate ; embryo dorsal near the base of the seed ; cotyledons flat, ovate, orbi- 

 cular or lanceolate, radicle terete, inferior. 



Psychotria with at least five hundred species is widely distributed through the tropics of the 

 two hemispheres, the larger number being found in America. Two West Indian species reach 

 southern Florida ; of these Psychotria nervosa, although usually a shrub, is now found to attain 

 occasionally the size and habit of a small tree, and Psychotria tenuifolia 1 is a small shrub. 



The generic name, from \j/fixv and Tp4<f>eiv, changed by Linnaeus from Psychotrophum of Patrick 

 Browne, is in allusion to the fact that the seeds of some of the species have been used as a sub- 

 stitute for coffee. 2 



c. s. s. 



« Swartz, Prodr. 43 (1788); Fl. Ind. Occ. i. 402. — De Candolle, Prodr. iv. 514. — Maycock, Fl. Barb. 92. — Grisebach, FL 

 Brit. W. Ind. 341. — Eggers, Bull. U. S. Nat. Mus. xiii. 61 (Fl. St. Croix and the Virgin Islands). — Gray, Syn. Fl. N. Am. i. pt. 

 -Coombs, Trans. St. Louis Acad. Sci. vii. 430. — Duss, Ann. List. Col. Marseille, iii. 343 (Fl. Phaner. Antill. Franc.).— 

 ' -nU. S. 1113. 



a, Chapman, Fl. 177 (in part, not Nuttall) (1864). 



1 Psychotria for this genus are Myrstiphyllum and Psychotrophum of Patrick Browne ; but these are among 



of the Vienna Congress, at which the rules of bota " ' 



