_ f 



/ 



134 CONTRIBUTTONB FROM TFTE NATIONAL HERBAETUM. 



A goodly number of tropical weeds are also represented here, some 

 being cosmopolitan, others occurring only in America- Sucli are 

 Mimosa pudica^ Desmodium larbatum^ D, trifiorum (cosmopolitan), 

 D, ascendenSj D. axillarcj D. supinum^ D, spimle, Cassia tora (cosmo- 

 politan) , C, dipJiylla. 



The economic facts and the vernacular names contained in tlie n<^tes 

 haA^e been obtained from Watt," Urban,'^ Cook and Collins,^ and 

 many other reliable sources, Tn connection witli the descriptions ref- 

 erence has been made to Cook and Collins^ Economic Plants of Porto 

 Rico/" whenever those authors mention a spec^Jes, give a plate, or use 

 a name not adopted in this paper, A large number of the si)ecies 

 described have been examined in the herbarium of the Royal Botan- 

 ical Museum in Berlin, especially valuable being the duplicates of Sin- 

 tenis, Schwanecke, and Bcrtero. From the lierbarluni material, from 

 the great English floras, and from Bentham's classical monograplis 

 has been derived much information in regard to geographical distribu- 

 tion. It has undoubtiully been of service in preparing this paper that 

 in various trips in the Tropics an oppoi'tunit}' has been given the 

 writer of seeing, in a living condition, a large number of the plants 

 described. 



The nomenclature generally followed has been that of Urban, 

 although at times the Kew Index names have ]won used. Since the 

 appearance of Urban^s Flora Portoricensis ^ it has been -necessary to 

 interpolate several new forms and names and to reduce to synon^miy 

 a number of Bello's species. Likewise the lists of localities have been 



ium 



Urban. 



SYNOPSIS OF THE GENERA, 



Flowers regular; petals valvale in ilic bud. Mimosoideae. 



Stamens indefinite, but at least more than 10. 

 Stamens consoUdated at the basi; i>r united 

 and forming a tube; in several genera more 

 than a single carpel. (Ingeae.) 



Leaves pinnate; style 1. 1. Ingn (p. 140). 



Leaves bipinnate (pinnae sometimes 1- 

 jugate bearing 1 to 3 leaflets); style 1, 

 Legume thick, compressed, coria- 

 ceous or somewhat fleshy, invo- 

 lute, curved, ur almost straight, in- 

 dehiscent or dehiscent with con- 

 torted valves J sometimes separat- 

 ing into 1-seeded joints. 2, Pilhecolobiifm (p. 141) 



a Watt, Gi'orge, A dictionary of the econt>mic products of Tmlia, 1885-1893. 

 ^Symbolae Antillanae, volume 4, pp. 2(i2 to 312, 1905. 



c Contributions from th(^ IInit(Ml Stall's National TTi^rbarium, volume 8, })ag(^s r>7 lo 

 2(i9, 1903. 



