. 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. entire,or sometimes 3-toothed. On prairies and barrens, Pennsylvania to Minnesota. Re-corded as adventive in Massachusetts. 25. Helianthus tomentosus Michx. Woolly Sunflower. Fig. tomentosus Michx. Fl. Bor. Am. 2: 141. 1803. Perennial; stem stout, hirsute or hispid, especiallyabove, branched, 4°-io° high. Leaves rather thin,ovate, or the lower oblong, mostl
. 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. entire,or sometimes 3-toothed. On prairies and barrens, Pennsylvania to Minnesota. Re-corded as adventive in Massachusetts. 25. Helianthus tomentosus Michx. Woolly Sunflower. Fig. tomentosus Michx. Fl. Bor. Am. 2: 141. 1803. Perennial; stem stout, hirsute or hispid, especiallyabove, branched, 4°-io° high. Leaves rather thin,ovate, or the lower oblong, mostly alternate, 3-ribbedabove the base, gradually or abruptly contracted intomargined petioles, rough above, softly villous-pubes-cent beneath, sparingly serrate, the lower often 1°long and 4 wide; heads commonly several or nu-merous, 3-4 broad; involucre hemispheric, its bractsimbricated in many series, linear-lanceolate, long-acuminate, squarrose, densely hirsute and ciliate,usually longer than the broad yellowish disk; chaffof the receptacle and lobes of the disk corolla pubes-cent; pappus of 2 subulate awns. In dry soil, Virginia to Georgia and Alabama. Re-ported from Illinois, probably erroneously.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
