546 PROCEEDINGS OF THE AMERICAN ACADEMY, 
no. 461, Schaffner, no. 343; Durango, Palmer, no. 453, E. W. Nelson, 
no. 4564; Chihuahua, Pringle, nos. 1151, 1285; near Sta. Teresa, 
Tepic, Rose, no. 3397. This species differs from the preceding in its 
broader (oblong) less crowded leaves very different in pubescence and 
tending to be conduplicate along the midnerve. The range is also quite 
different. — 
= = Stems narrowly winged: rays pale yellow. 
34. V. srenopHyLia, Greenm. Proc. Am. Acad. xxxii. 309. — Moist 
slopes above Cuernavaca, Morelos, altitude 2,000 m., Pringle, nos. 6508, 
* * Leaves broader, lanceolate to ovate. 
+ Leaves coarsely dentate: Mexican. 
++ Leaves, at least in part, decurrent upon the stem. 
35. V. COAHUILENSIS, Gray, |. c. 14; Hemsl. 1. c. iv. 57. — Coahuila, 
9.5 km. east of Saltillo, Palmer, nos. 584, 619; Nuevo Leon, mountains 
about Monterey, Pringle, no. 2870. 
viridior. Lower surface of the leaves green, scabrous-puberu- 
lent instead of canescent-tomentose as in the typical form. — Limestone 
ledges, Carneros Pass, Coahuila, 12 August, 20 September, 1890, Pri- 
gle, no. 8268. Type in herb. Gray. 
++ ++ Leaves sessile and auricled, but never decurrent. 
od 36. V. nypoteuca, Gray, ]. c. xv. 87, xix. 13; Hemsl. |. ¢. ii. 188. 
“ __ San Luis Potosi, Mexico, Parry & Palmer, no. 474, Schaffner, 
no. 300. ae 
+ + Leaves serrate or entire (serrate to coarsely dentate in the S. American 
. subcordata). 
«+ Perennial herbs or shrubs, with solitary heads and wingless stems: S. American. 
= Achenes narrowly winged. 
37*, V. Arnotrn, Baker, 1. c. 215. V. helianthoides, Hook. & 
Arn. in Hook. Jour. Bot. iii. 316, not Michx. V. Hookerit, Klatt, 
l. c. xx. 92.— Paraguay at Asuncion, Gilbert, no. 1043; Argentine 
Republic, Entre Rios, Tweedie. 
= = Achenes broadly winged. 
; a. Leaves opposite. 
88%. V. aspruromes, Griseb. Symb. Fl. Argent. 194. — Argentine 
__ Republic in Prov. Cordoba. 
