1916] 
GREENMAN—MONOGRAPH OF SENECIO 145 
Coulter, Syn. Fl. Colo. 82. 1874, in part; Coulter, Manual 
Rocky Mountain Region 211. 1885, in part. 
S. crocatus Rydb. Mem. N. Y. Bot. Gard. 1:446. 1900, in 
part; Bull. Torr. Bot. Club 27:177, pl. 5, fig. 13. 1900, as to 
deseription, illustration, and most of specimens cited, not as 
to synonymy ; Fl. Colo. 396. 1906, mainly ; Daniels, Fl. Boulder 
202. 1911, mainly; Nelson in Coulter & Nelson, Manual Cent. 
Rocky Mountains 582. 1909, in part. 
An herbaceous perennial, glabrous or essentially so 
throughout; stems one to several from a common base, erect 
or ascending, 1 to З dm. high; lower leaves ovate, subobovate, 
broadly spatulate or somewhat oblong-lanceolate, 1 to 4 em. 
long, .5 to 2.5 em. broad, rounded to obtuse at the apex, entire 
to crenate, narrowed at the base into a winged petiole equal- 
ling or exceeding the blade; stem-leaves mostly sessile, oblong- 
lanceolate to triangular-ovate, frequently conspicuously di- 
lated at the base and amplexicaul; inflorescence a few to sev- 
eral-headed terminal corymbose cyme; heads about 1 cm. 
nigh, radiate ; involucre campanulate, calyculate; bracts of the 
involuere about 21, linear-lanceolate, 6 to 7 mm. long, acumi- 
nate, acute, glabrous or slightly tomentulose, frequently red- 
dish-tipped; ray-flowers 10 to 12, rays yellow; disk-flowers 
numerous; achenes glabrous. 
Distribution: mountains of Wyoming and Colorado. 
Specimens examined: 
Wyoming: La Plata Mines, 21 Aug., 1895, A. Nelson 1769 
(Gray Herb., U. S. Nat. Herb., and Mo. Bot. Gard. Herb.) ; 
wet, subalpine woods, Nash’s Fork, Albany Co., 15 Aug., 1908, 
A. Nelson 9148 (Mo. Bot. Gard. Herb.) ; grassy ground, below 
snow, Bridges Peak, Carbon Co., 24 Aug., 1903, Goodding 
1980 (U. S. Nat. Herb., Phil. Acad. Nat. Sci. Herb., and Mo. 
Bot. Gard. Herb.). 
Colorado: alpine meadows, summit of North Park Range, 
Larimer Co., 10 Aug., 1908, Goodding 1820 (U. S. Nat. Herb. 
and Mo. Bot. Gard. Herb.); about timberline, above Berth- 
oud's Pass, 14 Sept., 1874, G. Engelmann (Mo. Bot. Gard. 
Herb.); timberline, Long's Peak, 5 Aug., 1886, Letterman 
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