1918] 
GREENMAN—MONOGRAPH OF SENECIO 41 
98. S. sordidus Greenm. Monogr. Senecio, I. Teil, 24. 1901, 
and in Engl. Bot. Jahrb. 32 : 20. 1902. 
S. neo-mexicanus Gray, Proc. Am. Acad. 19:55. 1883; 
Syn. Fl. N. Am. 1?: 392. 1884, and ed. 2, 1886, in part, as to 
plant of Greene. 
An herbaceous perennial; stem erect, 5 to 6 dm. high, 
tawny tomentulose at the base and in the leaf-axils, nearly 
glabrous above, somewhat striate and more or less purplish; 
radieal and lower stem-leaves petiolate, oblong-oblanceolate 
in general outline, including the petiole 5 to 10 em. long, 1 to 
2.5 em. broad, sublyrate and rather coarsely serrate-dentate, 
tawny tomadalose on both surfaces, somewhat Abrit 
above; upper stem-leaves gradually reduced, becoming ses- 
sile and bracteiform at the corymbose cyme; heads 10 to 12 
mm. high, radiate; involucre campanulate, sparingly calycu- 
late, glabrous or nearly so; involucral bracts about 21, linear- 
lanceolate, 6 to 7 mm. long, often purplish-tipped; ray-flowers 
10 to 12, rays yellow; disk-flowers numerous; achenes 
glabrous. 
Distribution: southwestern New Mexico. 
Specimens examined : 
New Mexico: dry wooded hills, near Silver City, 10 May, 
1880, E. L. Greene (Gray Herb.), TYPE. 
99. S. neo-mexicanus Gray, Proc. Am. Acad. 19:55. 
1883; Syn. Fl. N. Аш. 12: 392. 1884, and ed. 2, 1886, mainly; 
Rydb. Bull. Torr. Bot. Club 27 : 186. 1900, in part; Greenm. 
Monogr. Senecio, I. Teil, 24. 1901, and in Engl. Bot. Jahrb. 
32:20. 1902; Wooton & Standley, Contr. U. S. Nat. Herb. 
19 : 747. 1915, in part. PL 4, fig. 1. 
S. aureus var. borealis Gray, Pl. Wright., pt. 2, p. 100. 1853, 
and in Bot. Mex. Bound. Surv. 103. 1859, not Torr. & Gray. 
S. Towmeyi Greene, Pittonia 3 : 349. 1898. 
S. willowensis Greenm. Monogr. Senecio, I. Teil, 24. 1901, 
and in Engl. Bot. Jahrb. 32 : 20. 1902. 
S. Blumeri Greene, Leafl. Bot. Obs. & Crit. 2 : 20. 1909. 
S. Encelia Greene, Leafl. Bot. Obs. & Crit. 2: 22. 1909. 
