1918] 
GREENMAN— MONOGRAPH ОҒ SENECIO 55 
entire; inflorescence and characters of the head like the 
species. 
Specimens examined: 
Colorado: Lat. 39-419, coll. of 1862, Hall ё Harbour 333 in 
part (Gray Herb. and Field Mus. Herb.), түрРЕ; mountain 
sides near Georgetown, alt. 2435-3050 m., Patterson 79 in 
part (Gray Herb.); Silverton, July, 1889, Eastwood (U. S. 
Nat. Herb. No. 215761). 
An extreme form differing from the type of the species in 
becoming nearly glabrous, and in having merely sinuate- 
dentate to entire leaves. Numerous intermediate forms oc- 
eur, such as Sheldon's No. 167, which connect the variety with 
the species. 
Var. canovirens (Rydb.) Greenm. comb. nov. 
Senecio canovirens Rydb. Bull. Torr. Bot. Club 27:187. 
1900. 
Leaves oblanceolate, 2 to 15 em. long, .5 to 2.5 em. broad, 
subentire to sinuately lobed or even coarsely and unequally 
toothed. 
Distribution: Pikes Peak, Colorado, to southern New 
Mexico. 
Specimens examined: 
Colorado: Pikes Peak, 25 Aug., 1915, Drushel (J. A. 
Drushel Herb. and Mo. Bot. Gard. Herb.); summit of wet 
mountains, Fremont Co., alt. 2730 m., 28 Sept., 1910, Eggles- 
ton 6335 (U. S. Nat. Herb.). 
New Mexico: White Mountains, Lincoln Co., alt. 2740 m., 
30 July, 1897, Wooton 244 (U. S. Nat. Herb, Gray Herb., 
Berlin Herb., Greene Herb., Univ. of Notre Dame, and Mo. 
Bot. Gard. Herb.) ; eraters, Valencia Co., 28 July, 1906, Wooton 
(U. S. Nat. Herb.); Water Cañon, Magdalena Mountains, 
Soeorro Co., 16 July, 1897, C. L. Herrick 746 (U. S. Nat. 
Herb.) ; hillsides, Black Range, coll. of 1904, Metcalfe 1179 (U. 
S. Nat. Herb.) ; Organ Mountains, Dona Ana Co., alt. 2740 m., 
4 Sept., 1897, Wooton 493 (Mo. Bot. Gard. Herb. and Greene 
Herb., Univ. of Notre Dame, No. 47404). 
