. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. ads radiate. Wet grounds, Quebec, Minnesota and Sas-katchewan. June-Aug. Petasites frigida (L.) Fries, admitted, inour first edition, as recorded from Lake Win-nipeg, is a high boreal species, not known tooccur within our area. 3. Petasites sagittata (Pursh) A. Sweet Coltsfoot, Bitter-bur. Fig. 4597. Tussilago sagittata Pursh, Fl. Am. Sept. 332.
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. ads radiate. Wet grounds, Quebec, Minnesota and Sas-katchewan. June-Aug. Petasites frigida (L.) Fries, admitted, inour first edition, as recorded from Lake Win-nipeg, is a high boreal species, not known tooccur within our area. 3. Petasites sagittata (Pursh) A. Sweet Coltsfoot, Bitter-bur. Fig. 4597. Tussilago sagittata Pursh, Fl. Am. Sept. 332. sagittata Hook. Fl. Bor. Am. i : 307. sagittata A. Gray, in Brew. & Wats. 1: 407. 1876. Scape and racemose-corymbose inflorescencesimilar to those of the two preceding deltoid-ovate to reniform-ovate, persist-ently white-tomentose beneath, glabrous or nearlyso above, 4-io long, their margins sinuate-den-ticulate, neither cleft nor lobed; involucre cam-panulate ; flowers nearly white, the marginal onesof the pistillate heads radiate. In wet grounds, Labrador to Hudson Bay, Manitobaand Minnesota, west to British CokuTibia, south in theRocky Mountains to Colorado.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
