1<'U NTRIB1 riONS FROM THE NATIONAL II I B B \ Kl I M . 



long as the leaves; pods glaucous, l to 5 cm. long, J to •"> mm. broad; seeds yellow 

 mottled with brown. 



Type U. 8. National Herbarium no. 153173, collected b] Rose and Painter on the 

 road between Ban Juan del Rio and Cadereyta, Quer£taro, August, 1905 (no. 



^Min\ ,.| i \:i \\\ ! ering branch; 6, fruiting branch; c, oalyj 



i and/, Btamena; g, seed Figs, <i and b, natural die; - and d, scale 2; <./. and .</. scale i. 



TWO ADDITIONAL SPECIES OF COLOGANIA. 



In L904 I published a synopsis of the species of Cologania and the 

 next year the description of C. congesta. In L 903 and l!»<'.~. I collected 

 many additional specimens (47 sheets) in Mexico, which have greatlj 

 enriched our herbaria and added much to our knowledge of the genus. 



Colog-ania lozani Rose, sp. nov. 



Sterne twining with spreading or Bomewhal reflexed reddish hair-; leaflets 3, 

 lanceolate or somewhat rhombic, J to 7 cm. long, 1.5 to 2.5 cm. broad, acute, 

 roughish-pubescenl on both sides, dark green above, flowers (so far as known in 

 umbels of four; peduncle 2 to 4 nun. long; pedicels aboul 1<» nun. long, hairy; 

 bractlets at base of calyx '_'. filiform; calyx 8 mm. long, somewhal purplish, glabrous 

 except for a lew spreading hairs; lower calyx lobe linear, longer than the others; 

 corolla purplish, 25 nun. long; fruit not seen. 



Type U. S. National Herbarium no. 461966, collected by C. G. Pringle and his most 

 valuable assistant, Filem6n Lozano, in the Sierra Madre near Monterey, Nuevo I. eon. 

 September 7, 1904 no. L3425). 



This species is near C. deamii, but has very differently shaped leaflets, etc. 



Cologania tenuis Rose, sp. nov. Platb XXXI. 



A delicate twining vine with appressed pubescence; leaflets 3, very thin, ovate- 

 oblong, 3.5 to 6 cm. broad, rounded at base, acute, with scant} appressed pubescence 

 on both sides, pale beneath; flowers 4 or 5 in a subseesile umbel or short raceme; 

 peduncles 5 to 1" mm. long; calyx tube 8 nun. long, purple, densely pilose; upper 

 calyx lobe entire, acute; the lower one linear, much longer than the others; corolla 

 purple, 2.5 cm. long; pods narrow, 4 cm. or more long, appressed-pubescent. 



Type r. S. National Herbarium no. 450806 (Roseno. 7^2:: i. Collected by Dr. I I i 

 Pringle in a mountain canyon above Cuernavaca, Morelos, July 21, 1904 i no. 13414 >, 

 in the same general region (El Parque) bj Rose and Painter, September 21, 1903 

 (no. 7223), and by Dr. C. A. Purpusal Salto de Agua, October, 1905 (no. 1750 



This species should probably be placed near- C. grandiflora, but it has different 

 foliage, smaller Mowers, and different pubescence on the calyx. 



Explanation of Pi \u XXXI.— Pig. a, plant, b, fruit; c, calyx; d, banner; '. wing; / ki-el: 

 g, Btamens; ft, ovary. Pigs. a to/, Datura! Bize; g&nd ft, Bcale2. 



THE MEXICAN SPECIES OF DOLICHOLUS. ' 



Mr. Hemsley, in the Biologia ( Jentrali- Americana, published in I : 

 credit- ten species of Rhynchosia to Mexico proper. 



Of these, R. caribaea has been excluded by S. Watson, and R, meni- 

 stpermoides has been referred by Miss Vail to americana, 'The Mexican 

 specimens referred to R. senna arc true R, texana Torr. 61 Gr. Sei 

 eral of the Mexican species have since been described, and four others 



i lus Medic. Vbrles. Churpf. Phys. Gee. 2:864. 1787. 



Type species D. minima i L. | Medic loc. cit. 

 Rhynchosia Lour. Id. Cochinch. 9:460. L790. 

 Type species R. volubiHs Lour. loc. cit. 



