1902] PLANTS COLLECTED AT NOME CITY, ALASKA 297 
involucral bracts linear-attenuate, densely clothed with purple 
_ woolly hairs, 5™™ long, very narrow: rays purple, filiform, about 
$0, 4™™ long; disk corollas tubular, with 5 purple teeth at sum- 
‘mit: pappus barbellate, white: akenes hispid with spreading 
Type range: “in Alpibus Lapponiae, Helvetiae.” 
164. PETASITES FRIGIDA Fries. Syll. 20. 1854-55. Tussilago 
rigida L. Sp. Pl. 865. 1753.—Leaves deltoid-ovate, deeply 
cordate at base, irregularly and deeply sinuate-dentate or 
lobed, the teeth callous-tipped; upper surface almost glabrous, 
lower white tomentose; petioles equaling or longer than the 
: leaves, together 8™ long: bracts of the flowering stem sheathing, 
carious, sometimes foliaceous at apex: female plants with heads 
. corymbs; bracts of the involucre 1™ long, subulate, a few 
: linear calyculate bractlets at base: akenes linear, glabrous, 
Musely ribbed, with loose outer coat: pappus 1.5% long. » 
: Type range: “in Alpium Lapponiae, Helvetiae, Sibiriae, convallibus.” 
_ 165. Saussurgza atpina DC. Prodr. 6: 535. Serratula alpina 
ra - PL. 816. 1753.—Stems simple, 5° to 1.5™ high, ribbed, 
om ly arachnoid-tomentose : leaves lanceolate, narrowed at base, 
I-nerved, loosely tomentose, with margins entire or 
OO aaa I~5; involucral bracts in 4 series, ovate, the : 
— successively shorter, purple, glandular-hairy; involucre | 
nee igh: rays none: akenes black, glabrous, with plumose 
Mppus: receptacle with slender chaffy scales among the — 
~*> corolla with linear divisions to the border, almost — 
om 
& § the tube, rose-color. : 
iiss “8*: “In Alpibus Lapponiae, Austriae, Helvetiae, Arvoniae, 
SENECIO FRIGIDUS Less. Linnaea 6: 239. Cineraria 
; dilated clasping petioles ; upper stem leaves sessile 
(1823). Hook. Fl. Bor.-Am, 1:334. pl. 122. 1840— 
iple, 2-flowered, 12-15°" high, glabrous below, clothed = 
0 floccose wool above : radical leaves oblong, dentate, 
: ‘Nearly twice as long as the blade; lower stem leaves | 
