[Уо 3 
186 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
2440 m., 22 June, 1891, McDougal 253 (U. S. Nat. Herb.) ; 
Kendrick Peak, near Flagstaff, May—Oct., 1900, Purpus 8001 
(Mo. Bot. Gard. Herb.); near Flagstaff, alt. 1850 m., 16 
Aug., 1901, Leiberg 5859 (U. S. Nat. Herb.) ; Apache-Verde, 
east of Baker Butte, Black Mesa Forest Reserve, 1 June, 
1900, Coville 1040 (U. S. Nat. Herb.) ; Santa Catalina Moun- 
tains, alt. 2740 m., April, 1881, Lemmon 190 (Gray Herb.) ; 
Rincon Mountains, alt. 2285 m., coll. of 1891, Neally 221 
(U. S. Nat. Herb.); Santa Rita Mountains, alt. 2135-2440 
m., 3 May, 1881, Pringle (Gray Herb., U. S. Nat. Herb., and 
Phil. Acad. Nat. Sci. Herb.); in pine forests, Santa Rita 
Mountains, alt. 2285 m., 8 June, 1884, Pringle (Phil. Acad. 
Nat. Sei. Herb.); Tanner's Cañon, near Fort Huachuca, 
coll. of 1882, Lemmon 2786 (Gray Herb.); Willow Spring, 
10-20 June, 1890, Dr. E. Palmer 479 (Gray Herb. and 
U. S. Nat. Herb.) ; Ramsey Canon, Huachuca Mountains, 10 
April, 1915, Blumer 5929 (Mo. Bot. Gard. Herb.); rolling 
andesitie pine land, Barfoot Park, Chiricahua Mountains, 
alt. 2440-2500 m., 17 Sept., 1906, Blumer 151, 1388 (U. 8. 
Nat. Herb. and Mo. Bot. Gard. Herb.). 
Chihuahua: Colonia Gareia in the Sierra Madres, alt. 2285 
m., 6 June, 1899, Townsend Ф Barber 14 (Gray Herb. and 
Mo. Bot. Gard. Herb.). 
80. S. toluccanus DC. Prodr. 6:428. 1837; Schz. Bip. in 
Seemann, Bot. Voy. Herald 311. 1852-57; Hemsl. Biol. Cent.- 
Am. Bot. 2:248. 1881; Greenm. Monogr. Senecio, I. Teil, 24. 
1901, and in Engl. Bot. Jahrb. 32:20. 1902. РІ. 5. 
An herbaceous perennial; stems 2 to 10 dm. high, erect or 
ascending from a thick stout rootstock; lower leaves ovate 
to oblong-oblanceolate, including the petiole 5 to 30 cm. 
long, 1 to 10 em. broad, acute or obtuse, slightly cre- 
nate to conspicuously dentate with spreading subear- 
tilaginous teeth, narrowed at the base into a winged 
petiole, thiek and firm in texture, glabrous on both surfaces 
or slightly tomentulose in the early stages and soon glabrate; 
stem-leaves few, sessile and semi-amplexieaul, lanceolate, 
dentate to entire; inflorescence terminating the stem in a 
