SUNFLOWER FAMILY 455 
racemiform inflorescence, campanulate ; involucre about 5-9 mm. high; flowers whitish, the pistil- 
late with short rays. 
Typically in tundra and moist subalpine meadows and bogs, Boreal Zone; circumboreal, extending south into 
the high mountains of southern British Columbia and, in a form approaching var. nivalis, to the Wenatchee 
i ntains of Lapland. 
Mountains of Washington (where found at low elevations). Type loc April—June. 
Petasites srigitvs var. nivalis (Greene) Cronquist, Leaflets ae Bot. (? 30. 1953. (Pet nivalis 
apr "Pittonia 18. 1889; P. vitifolia Greene, Leaflets Bot. Obs. 1: 180. 1906; P. hyperboreus Rydb. 
N. Am 34: 312. 27.) Leaves Lars wey poe — and veined, seldom more than 2 dm. wide, seldom 
spidastbe, wider than long, the saangced seldom (though s metimes) extendi re th half way to the base; 
short, slender, callous teeth few or wanting. Mostly: in Comate and Alaska extending southward at high altitudes 
to th ympic ° ns of Washington and the Cascade Mountains of northern Oregon, and to northern Mi 
ntai 
nesota. Type locality: Mount Rainier, Washington. July—Aug. 
Petasites frigidus var. palmatus (Ait) Cronquist, pay 48: 124. 1946. | oe nd — Ait. 
Hort. ein 3: 188. 1789; Nardosmia palmata Hook. FI. Amer. 1: 308. 1833; N. —— utt. Trans. 
Amer. Phi oer Hog: — 1841; N. Pigida var. palmata Peden Bull. Soc. Impér. Nat ose. “st 372. 1865; 
Potasites plan Gray, Bot. Calif, 1: 40 SH xe ciosa Piper, Ma 2:97. 1901.) Leaves pal 
mately lobed card veined, | very large (u up t 4 dm. wide), tending to be broader than long, the lob 
monly extendi ord bs least half way to the seo wees much deeper; short, slender, callous teeth rather freely pro- 
duced in additi to ike larger = Stream banks, boggy ground, and moist woods, Foun: the lowlands to 
moderate cleveisnds in the mounta r he sa oc tal in Canada bu : a southern than the other ben 
gee ae Yukon, and sarang Ti south to Secu hanieiar: Michig and Minnesota; in our area occur 
a a e Cascade Mountains in D Wasbieeter and Oregon mie Peskendi ing south in the California Coast 
Rane pig ral erey County. Type locality: Newfoundland. Feb.-May 
5793, Petasites frigidus 
5794. Petasites sagittatus 
5791. Senecio mikanioides 
5792. Crocidium multicaule 
