1916] 
GREENMAN—MONOGRAPH OF SENECIO 169 
Var. thomsoniensis (Greenm.) comb. nov. 
S. Balsamitae var. thomsoniensis Greenm. Ottawa Nat. 
25 :116. 1911. 
S. Balsamitae Greenm. Ottawa Nat. 25:116. 1911, not Muhl. 
Stems 1.2 to 4.5 dm. high, at first floccose-tomentulose later 
more or less glabrate; lower leaves oblong-oblanceolate, the 
blade 1 to 7 em. long, 5 to 12 mm. broad, rounded or obtuse at 
the apex, crenate to serrate, gradually narrowed at the base 
into the petiole, at first tomentulose, particularly on the under 
surface, later more or less glabrate; inflorescence and base of 
the involucre often slightly tomentulose. 
Distribution: Alaska to British Columbia and Montana. 
Specimens examined: 
Alaska: on gravel flood-plain of the Kuskokwim River, 19 
July, 1902, Brooks Ф Prindle (U. S. Nat. Herb.). 
British Columbia: Bonaparte River, 18 June, 1889, Macoun 
(U. S. Nat. Herb. 219791, in part) ; South Thompson River at 
Kamloops, 10 July, 1906, E. Wilson 686, 672 (Mo. Bot. Gard. 
Herb. and Geol. Surv. Canada Herb. 81261) ; Lake Osoyoos, 31 
May, 1905, Macoun 69357 (Gray Herb.). 
Montana: Big Fork, Flathead Co., 14 June, 1904, W. W. 
Jones (Mo. Bot. Gard. Herb.). 
Washington: Fort Okanogan, U. S. Exploring Expedition, 
Wilkes 971 (С. S. Nat. Herb. 48747). 
71. S. multnomensis Greenm. Monogr. Senecio, I. Teil, 24. 
1901, and in Engl. Bot. Jahrb. 32:20. 1902; Ottawa Nat. 25:115. 
1911. 
An herbaceous perennial, glabrous or slightly floecose- 
tomentulose in the axils of the leaves, on the margins of the 
petioles, and in the inflorescence; stems solitary or cespitose, 
erect or somewhat flexuous, 3 to 7 dm. high; lower leaves ob- 
long-oblaneeolate including the petiole 4 to 15 em. long, .8 to 
2 em. broad, obtuse or rounded at the apex, erenate-dentate 
to more or less lyrately lobed with remote lobes and deep 
rounded sinuses, narrowed at the base into a slender petiole 
usually exceeding the blade; upper stem-leaves sessile and 
pinnatisect to much reduced entire bracts; inflorescence a ter- 
