[Vor. 5 
66 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
submucronate, narrowed below into a petiole usually exceed- 
ing the blade, thick and firm in texture, white-tomentose on 
both surfaces, somewhat glabrate; inflorescence a few-headed 
close corymbose cyme; heads about 12 mm. high, radiate; in- 
voluere campanulate, calyculate; bracts of the involucre about 
21, linear-lanceolate, 7 to 8 mm. long, densely tomentose, 
whitish-margined and conspicuously tipped with purple; ray- 
flowers 10 to 12, rays yellow; disk-flowers about 60; achenes 
hirtellous. 
Distribution: known only from the type locality. 
Specimen examined: 
Colorado: Pagosa Springs, alt. 2130 m., 15 May, 1894, Ben- 
jamin H. Smith (Phil. Acad. Nat. Sci. Herb.), ТУРЕ. 
112. S. gerberaefolius Schz. Bip. in Hemsl. Biol. Cent.-Am. 
Bot. 2 : 240. 1881; Greenm. Monogr. Senecio, I. Teil, 24. 1901, 
and in Engl. Bot. Jahrb. 32 : 20. 1902. 
A low herbaceous perennial; stem erect, scapose, 1 to 3 dm. 
high from a stout caudex, silky villous at the base, tomentose 
to nearly glabrous above; leaves mostly radical, subcoriace- 
ous, lanceolate to oblong-lanceolate, including the narrowly 
winged silky villous petiole 5 to 14 cm. long, 1 to 2 em. broad, 
acute or obtuse, entire or obscurely dentate, strongly revolute- 
margined, at first tomentulose but soon glabrate above, 
densely and permanently white-tomentose beneath; upper 
stem-leaves few, bract-like; heads 2 to 6, rather large, 13 to 
17 mm. high, radiate; involucre campanulate, calyculate; 
bracts of the involucre about 13, lanceolate to lance-ovate, 10 
to 13 mm. long, 1.5 to 4 mm. broad; ray-flowers about 13, rays 
yellow; disk-flowers numerous; achenes densely appressed- 
villous. 
Distribution: high mountains of southern Mexico. 
Specimens examined: 
South Mexico: peak of Orizaba, alt. 3050-4660 m., Liebmann 
140 (Gray Herb.) ; rocky soil, subalpine region, Mt. Ixtaeci- | 
huatl, Oct., 1905, Purpus 1516 (U. S. Nat. Herb. and Mo. Bot. 
Gard. Herb.). 
