■> 



ROSE MEXICAN AND CENTRAL AMERICAN^ PLANTS. 101 



are here added- R. flm^eololdes hus been credited to Mexico by sev- 

 eral writers, but is probably to be excluded. I have examined all the 

 Mexican species except B. hirsnta, R. eri/fhrinonles^ and R. Incolor. 

 The name Khynchosia, first pul)lished in 1790, must give place to 

 the older name Dolicholus. The Mexican species with which I am 

 familiar are the following*: 



Dolicholus americanus (Mill.) Vail. 



Dolicholus cuernavacanus Rose. 



R}njnchosia cuemavacana Rone, Contr. Nat. llcrb. 8: 31o. 1905, 



Dolicholus discolor (Mart, & Gal.) Rose. 



llhynchosladhcoloT^l^vt. & Gal. Bull. Acad. Brux. lO-^: 198. 1843. 



Dolicholus hondurensis Rohc, t5p. nuv. 



Delicate vine, pubescent; leaflets 3, obovate, 2 to 4 cm. long, acute, Houietimea 

 Hhortly acuminate, rounded or broadly wedge-shaped at the base, with appressed 

 pubescence on both surfaces^, stronp:ly nerv(>d beneath; racemes 8 to 12 cm. long, 

 densely flowered; pedicels short (1 mm. long); pods small, 8 to 10 mm. long, 



apiculate. 



Type U. S, National Herbarium no. 246585, collected by C. Thicrne near San 

 Pedro Sula, Department of Santa Barbara, Honduras, May, 1888, and distributed by 



John Donnell Smith (no. 5200). 



This species was distri]>uted us Rhyrfrhn^ita precaioria DC, but it is nmch nearer 

 R. calycosa Henislcy, though still quite distinct from that species. 



Dolicholus longeraceniosus (Mart. &Gal.) Rose. 



Jlhynchomi f rmger a cemosa Mart & Gal. Bull. Acad. Brux, 10'^: 198. 1843. 



Dolicholus macrocarpus (Benth.) Rose, 



rjiyncJioda macrocarpa'Benth. PI. Hartw. 11. 1839, 



Dolicholus minimus (L. ) Medic. 



Dolicholus nelsoni Rose, sp. nov. 



Doubtless a high-chmbing vine; leaflets 3, softly pubescent on both surfaces, 

 broadly ovate, 4 to 6 cm. long, in cultivated specimens 10 cm. !ong, shortly 

 acuminate; raceme 10 to 15 cm. long; pedicels slender, 3 to 4 mm. long, covered ^vith 

 soft white pubescence interspersed with long yellow stiff hairs as are also the calyx and 

 peduncle; calyx teeth 5, all narrow, the two upper united below, the lowermost one 



much longer than the others. 



Type XJ. S. National Herbarium no. 273452, collected by E. \V, Nelson on road 

 between Tlaliscatillo, Guerrero, and Tla]>acingo, Oaxaca, altitude 1,L'(>0 to 1,560 

 meters, December*), 1894 (no. 2052). 



Dolicholus nigropunctatus (S. Wats- ) Rose. 



Ilhynvho^la nlgropHHCtida 8. Wats. Proc. Am. Acad. 22: 4()H. 1887. 



Dolicholus precatorius (Iluiub. & Bon]>. ) Rose. 

 Fihynchosia imcatoria DC. rn.d. 2: 885. 1S25. 

 Glycine precatoria Huml). ik Bonp. WilhL Enum. Ilort. Berol. 755, 1809. 



Dolicholus pringlei Rose. 



nhynchosia privglel Rose, Contr. Nat. Herb. 3: 316. lHi)5. 



Dolicholus texauus (Torr. & Gr. ) Vail. 



Dolicholus vailiae Rose, sp. nov. 



Vine climbing to the height of 2 to 3 meters; leaflets 3, softly pubescent on both 

 surfaces, ovate, 3 to 7 cm. long, acuminut<- racemes elongated, 20 to 25 cm. long, 



