ROBINSON AND GREENMAN. — GENUS MONTANOA. 517 



subcordate at the exauriculate base: fruiting heads (1.4 cm. in diameter) 

 considerably smaller than in the preceding related species. — Proc. Am. 

 Acad. xxii. 424. — Jalisco on the Rio Blanco, Palmer, no. 599, near 

 Guadalajara, Pringle, nos. 2467 (distr. as 31. patens), 4545 ; at Balafios, 

 Hose, no. 2939. Readily distinguished by the retuse pales. 



++ ++ Climbing shrubs with slender terete stems, thinner more delicate leaves, and 

 long slender and mostl}' hooked peduncles : clematoid plants of lower and more 

 tropical regions than the preceding group : nearly related and imperfectly 

 known species. 



= Leaves large (1.2 dm. long), crenate-serrate, conspicuously appendaged at the 

 base, obsoletely 3-lobed, caudate-acuminate, some of the upper ones usually 

 alternate. 



24. M. Pittieri. Bracchlets green, in dried state striate, at first 

 tomentulose, soon only puberulent or wholly glabrate : leaves ovate or 

 somewhat rhombic in general contour, with a shoulder-like angle or short 

 lobe on each side, appressed-puberulent not scabrous above, somewhat 

 paler and soft-puberulent beneath, crenate-serrate with mucronulate 

 teeth, rounded at the base but extended at the insertion of the petiole 

 into a quadrate biauriculate appendage ; petioles (2 to 3 cm. long) pubes- 

 cent : peduncles alternate (4 cm. long), very flexuous and at length 

 recurved: heads not numerous, in anthesis l.l to 1.2 cm. in diameter 

 excl. rays; the latter about 8, white, 1.5 cm. long; involucral bracts 

 about 6, lanceolate, acute, 4 mm. long ; pales in young fruit papery, 

 obovate, erose-dentate, tipped at the usually retuse summit with a short 

 sharp incurved point. — M. liibiscifolia, Klatt, Bull. Soc. Bot. Belg. 

 xxxi. 201, not Benth. — Costa Rica, in a hedge ou the llanos of Ala- 

 juelita, Pittier, no. 1455. 



= = Leaves smaller (4 to 9 cm. long), deltoid-ovate, acuminate, mostly opposite 

 to the summit of the stem, serrate, undivided or somewhat 3-lobed, rounded, 

 truncate, or subcordate at tiie base but often with a slight appendage or short 

 acumination at the insertion of the petiole. 



25. M. PAUCiFLORA, Klatt. Puberulent : leaves slightly scabrous 

 above, regularly serrate, undivided and shallowly but acutely 3-lobed 

 upon the same shoot ; petioles 1 to 4 cm. long : heads few or many ; in- 

 volucral bracts oblong- or linear-lanceolate, 4 mm. long, j^ubescent : 

 branches of the inflorescence opposite and divaricate, flexuous : ligules 

 1.3 to 1.5 cm. long. — Leopoldina, xxiii. 90. Coreopsis tri lobata, Yahl 

 in herb. ace. to Klatt, 1. c. — South America without locality, " e pi. 

 West." With Dr. Klatt's not over satisfactory type we should iden- 

 tify the following : J. Donnell Smith's no. 4242, coll. Heyde & Lux at 



