1918] 
GREENMAN—MONOGRAPH OF SENECIO 91 
dm. high, from a more or less elongated subligneous rootstock ; 
leaves chiefly basal, oblong-obovate to narrowly oblong-ob- 
lanceolate, 3 to 7 ст. long, .5 to 1.5 em. broad, rounded to 
obtuse at the apex, entire or subdentate towards the tip, grad- 
ually narrowed below into a slightly winged petiole, persist- 
ently white-tomentose on both surfaces, margins often revo- 
lute; upper stem-leaves few, much reduced, bracteiform; in- 
florescence a terminal few-headed corymbose cyme; heads 10 
to 12 mm. high, radiate; involucre campanulate, sparingly 
calyculate, tomentulose ; bracts of the involucre 13 to 21, linear- 
lanceolate, about 6 mm. long, acute; ray-flowers commonly 8, 
rays yellow; disk-flowers about 50; achenes glabrous. 
Distribution: mountains of northern Mexico. 
Specimens examined: 
Chihuahua: near Colonia Garcia in the Sierra Madre, alt. 
2285 m., 24 May, 1899, Townsend & Barber 1 (Greene Herb., 
Univ. of Notre Dame, Gray Herb., U. S. Nat. Herb., and Mo. 
Bot. Gard. Herb.), түре; Sierra Madre, 21 June-29 July, 1899, 
E. W. Nelson 6005 (U. S. Nat. Herb.). 
125. 5. bellidifolius HBK. Nov. Gen. & Sp. 4:175. 1820; 
Schlecht. & Cham. Linnaea 5:161. 1830; ОС. Prodr. 6: 429. 
1837 ; Hemsl. Biol. Cent.-Am. Bot. 2 : 236. 1881. 
S. pauciflorus HBK. Nov. Gen. & Sp. 4:170, pl. 365. 1820, 
not Pursh. 
S. cheiranthifolius HBK. Nov. Gen. & Sp. 4:176. 1820; ОС. 
Prodr. 6 : 429. 1837 ; Hemsl. Biol. Cent.-Am. Bot. 2 : 237. 1881. 
S. Vulneraria DC. Prodr. 6: 428. 1837; Hemsl. Biol. Cent.- 
Am. Bot. 2: 248. 1881; Greenm. Monogr. Senecio, I. Teil, 24. 
1901, and in Engl. Bot. Jahrb. 32 : 20. 1902. 
S. tricephalus Klatt in Herb. 
Cineraria vulneraria Alam. ex DC. Prodr. 6: 428. 1837. 
A low cespitose herbaceous perennial, at first white-tomen- 
tose throughout, more or less glabrate; stems erect or nearly 
so, 1 to 2.5 dm. high; leaves chiefly basal, subobovate to nar- 
rowly oblong-oblanceolate, 2 to 8.5 em. long, 5 to 12 mm. broad, 
rounded to submucronate-acute at the apex, entire to some- 
what dentate, gradually narrowed below into a petiole equal- 
