1916] 
GREENMAN—MONOGRAPH OF SENECIO 99 
Specimens examined: 
Mackenzie: ‘‘on limestone at the mouth of the Bear Lake 
River, and about Fort Norman and Fort Franklin,’’ Richard- 
son (Gray Herb. ex Hooker, Torrey Herb., and Geol. Surv. 
Canada Herb. 14872 in part), co-ryPE; west shore of Great 
Bear Lake, June-Aug., 1900, Bell 22937 (Geol. Surv. Canada 
Herb.). 
39. S.resedifolius Less. in Linnaea 6:243. 1831; Ledeb. КІ. 
Rossica 2:631. 1844-46, in major part; DC. Prodr. 6:347. 1837, 
in major part; Torr. & Gray, Fl. N. Am. 2:445. 1843, in part; 
Gray, Syn. Fl. N. Am. 1?:390. 1884, and ed. 2, 1886, in part ; 
Macoun, Cat. Canadian РІ, 267. 1884, in part; Greenm. Monogr. 
Senecio, I. Teil, 24. 1901, and in Engl. Bot. Jahrb. 32:20. 
1902. 
Cineraria lyrata Ledeb. in Mem. Acad. Petersb. 5:576. 1818; 
Reichb. Ic. Bot. 2:1, pl. 101. 1824; Hook. & Arn. Bot. Beechey's 
Voy. 126. 1832. 
A low herb; stems one to several from a perennial base, 
simple or branched, .5 to 2 dm. high, glabrous or slightly 
tomentose, particularly in the axils of the leaves; lower leaves 
petiolate, rotund-ovate, sublyrate or irregularly pinnately di- 
vided, crenate to sharply dentate; upper stem-leaves sessile, 
more or less pinnatisect, often reduced to lance-attenuate en- 
tire bracts; heads solitary or few, radiate, about 1 em. high, 
including the rays 2 to 2.5 em. in diameter; bracts of the caly- 
culate involucre linear-lanceolate, 6 to 8 mm. long, acuminate, 
acute, often purplish; achenes glabrous. 
Distribution: Alaska and Siberia. 
Specimens examined: 
Alaska: St. Lawrence Island, Chamisso (Gray Herb., Ber- 
lin Herb., and Kew Herb.); Behring Strait, U. S. North 
Pacific Exploring Expedition, 1853-56, Wright (Gray Herb.) ; 
Hall Island, Behring Sea, coll. of 1885, Thompson (Field Mus. 
Herb.) ; Hall Island, Behring Sea, 11 Aug., 1891, Macoun 20640 
(Geol. Surv. Canada Herb.) ; Herschel Island, Arctic Sea, coll. 
of 1893, Stringer 14390 (Geol. Surv. Canada Herb.); Port 
Clarence, 21 July, 1895, Sharp (Phil. Acad. Nat. Sci. Herb.) ; 
