ROSE .MI.XK AN \.\h CENTRAL \.MI.i:l< \ N PLA1 1**1 



are here added. R. phaseoloides has been credited to Mexico by sev- 

 eral writers, bul is probably to be excluded. I bave examined all the 

 Mexican species except R. hirsuta, It. erythrinoides, and R. hicolor. 

 The name Rhynchosia, first published in 1790, must give place to 

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

 familiar arc the following: 



Dolicholus americanus (Mill.) Vail. 



Dolicholus cuernavacanus Rose. 



Rhynchosia cuernavacana Rose, Contr. Nat . Herb. 8:.">l.">. L905. 



Dolicholus discolor Mart, & Gal. Rose. 



Rhynchosia discolor Mart. & Gal. Bull. A.cad. Brux. 10-: L98. L843. 



Dolicholus hondurensis Rose, sp. DOV. 



Delicate vine, pubescent; leaflets 3, obovate, 2 to 1 cm. l"ir_ r . acute, sometimes 

 Bhortly acuminate, rounded or broadly wedge-shaped at the base, with appi 

 pubescence on both surfaces, strongly nerved beneath; racemes s to 12 cm. long, 

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

 apiculate. 



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

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

 John Donnell Smith I no. 5200). 



This species was distributed as Rhynchosia precatoria DC, but it is much nearer 

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



Dolicholus long-eracemosus (Mart. & Gal. Rose. 



Rhynchosia longeracemosa Mart. & Gal. Bull. Acad. Brux. 10 2 :198. L843. 



Dolicholus macrocarpus l Benth. Rose. 



Rhynchosia macrocarpa Benth. PI. Hartw. 11. 1839. 



Dolicholus niiniinus | L.) Medic. 



Dolicholus nelsoni Rose, sp. nov. 



Doubtless a high-climbing vine: leaflets 3, softly pubescent on both surfaces, 

 broadly ovate, 4 to 6 cm. long, in cultivated specimens h> cm. long, shortly 

 acuminate: raceme 10 to 15 cm. long; pedicels slender, .'! to 4 mm. long, covered with 

 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 r. s. National Herbarium no. 273452, collected by E. W. Nelson on road 

 between Tlaliscatillo. Guerrero, and Tlapacingo, Oaxaca, altitude 1,260 to L,560 

 meters, December 6, L894 no. 2052 . 



Dolicholus nigropunctatus (S. Wats. Rose. 



Rhynchosia nigropunctaia S. Wats. Proc. Am. Acad. 22:408. 1887. 



Dolicholus precatorius (Humb. & Bonp. Rose. 

 Rhynchosia precatoria I>(\ Prod. 2: 385. 1825. 

 Olycim precatoria Humb. & Bonp. Willd. Enum. Hort. Berol. 755. I8pi 



Dolicholus pringlei Rose. 



Rhynchosia pringlei Rose, Contr. Nat. Herb. 3:::i»i. i- 



Dolicholus texanus (Torr. vV Gr. | Vail. 



Dolicholus vailiae Rose, sp. nov. 



Vine climbing to the height of 2 to 3 meter.-: leaflets 3, softly pubescent on both 

 surfaces, ovate, :'> to 7 cm. long, acuminate; racemes elongated, 20 lo 25 cm. long, 



