. 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. mountains of Virginia and West Vir-ginia. May-June. Genus 102. THISTLE FAMILY, 12. Senecio canus Hook. Silvery Ground-sel. Fig. 4621. 5. canus Hook. Fl. Bor. Am. i : 333. p!. 116. 1833. 5. Purshianus Nutt. Trans. Am. Phil. Soc. (II) 7 :412. 1841. Perennial, densely and persistently white-tomentose to the inflorescence; stems slender,usually tufted, 6-i8 high. Basal and lowerl
. 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. mountains of Virginia and West Vir-ginia. May-June. Genus 102. THISTLE FAMILY, 12. Senecio canus Hook. Silvery Ground-sel. Fig. 4621. 5. canus Hook. Fl. Bor. Am. i : 333. p!. 116. 1833. 5. Purshianus Nutt. Trans. Am. Phil. Soc. (II) 7 :412. 1841. Perennial, densely and persistently white-tomentose to the inflorescence; stems slender,usually tufted, 6-i8 high. Basal and lowerleaves spatulate or oval, entire, or rarely some-what repand, very obtuse, 1-2 long, narrowedinto petioles; upper leaves oblong or spatulate,obtuse or acute, mostly sessile, smaller, entireor dentate; heads several or numerous, 8-iobroad, usually slender-peduncled; involucrecampanulate, or at first short-cylindric, about5 high, its bracts linear-lanceolate, acute, spar-ingly tomentose, or glabrate, usually with noexterior smaller ones; rays 8-12; achenes gla-brous, at least below; pappus white. In dry soil, Manitoba to North Dakota, Nebraska,west to British Columbia and California. Recordedfrom Minnesota.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
