140 , URTICACEZ. 
Planchon defines several varieties of C. tala from Brazil and Bolivia, and one, the 
C. pallida, Torr. Bot. U.S. & Mex. Bound. Surv. p. 203, from Texas and North 
Mexico, which is probably our plant. 
3. TREMA. 
Trema, Lour. Fl. Cochinch. 562; Benth. et Hook. Gen. Plant. iii. p. 355; Bl. Mus. Bot. Lugd. 
Bat. ii. p. 58. 
Sponia, Comm., ex Dene. Herb. Tim. Descr. p. 170, et Planch. in DC. Prodr. xvii. p. 195. 
Between twenty and thirty shrubby and arboreous species, widely dispersed in tropical 
countries. 
1. Trema micrantha, Bl. Mus. Bot. Lugd. Bat. ii. p. 58. 
Sponia micrantha, Dene., ex Planch. in Ann. Sc. Nat. sér. 3, x. p. 333, et in DC. Prodr. xvii. p. 203. 
Celtis micrantha, Sw. Prod. p. 58, et Fl. Ind. Oce. i. p. 547. 
Rhamnus micranthus, Linn. Ameen. Acad. v. p. 395. 
Sponia canescens, Dene., et S. schiedeana, Dene., ex Planch. in Ann. Se. Nat. sér. 3, x. p. 330. 
Sponia grisea, Liebm., et S. crassifolia, Liebm.? in K. Dansk. Vidensk. Selsk. Skrift. ser. 5, i. 
p-. 340 (reprint, p. 56). 
Celtis schiedeana, Schl. in Linnea, vil. p. 140. 
Celtis canescens, H. B. K. Nov. Gen. et Sp. 1. p. 28. 
Trema canescens, Bl., et T. schiedeana, Bl. Mus. Bot. Lugd. Bat. ii. p. 58. 
A very common tree throughout TropicaL AMERICA and the West Inpies. Hb. Kew. 
There are many other synonyms relating to forms found outside of our limits. 
[Sponia ? integerrima, Beurling in Kong. Vetensk. Akad. Handl. 1854, p. 144, from 
Panama, is a doubtful plant. | | | 
Tribe III. CANNABINE. 
Cannabinee, Benth. et Hook. Gen. Plant. iii. p. 344. 
This tribe consists of two genera and three species, namely :—Humulus lupulus, Linn. 
(the Hop), and Cannabis sativa, Linn. (Hemp), both of which are widely cultivated and 
now naturalized in many countries, including Mexico; and a second species of Humulus, 
a native of China and Japan. 
Tribe IV. MORE. 
Moree, Benth. et Hook. Gen. Plant. ii. p. 344. 
This tribe consists almost exclusively of trees and shrubs. It comprises twenty- 
three genera, the majority of which are monotypic, and not one of them, except Dorstenia, 
counts more than six species. The species are dispersed over nearly the whole area 
of the order; but the majority inhabit tropical regions or mountains within the tropics. 
4. CHLOROPHORA. 
Chlorophora, Gaud. in Freyc. Voy. Bot. p. 509; Benth. et Hook. Gen. Plant. iii. p..363. 
Two arboreous species, the second a native of Tropical Africa. 
