. 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. Stiff-haired Sunflower. Fig. 4483. Helianthus hirsutus Raf. Ann. Nat. 14. hirsutus trachyphyllus T. & G. Fl. N. A. 2 :329. 1842. Perennial; stem densely hirsute, usually branchedabove, stout, rigid, 2°-4° high. Leaves ovate-lanceo-late or the upper lanceolate, rounded, truncate orsubcordate at the base, acuminate at the apex, thick,very rough above, rough-pube
. 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. Stiff-haired Sunflower. Fig. 4483. Helianthus hirsutus Raf. Ann. Nat. 14. hirsutus trachyphyllus T. & G. Fl. N. A. 2 :329. 1842. Perennial; stem densely hirsute, usually branchedabove, stout, rigid, 2°-4° high. Leaves ovate-lanceo-late or the upper lanceolate, rounded, truncate orsubcordate at the base, acuminate at the apex, thick,very rough above, rough-pubescent beneath, or serrulate, 3-6 long, 2-2 wide, short-petioled, or the uppermost sessile, nearly all oppo-site, the petioles of the lower ones i-i long; headsusually several, 2-3V broad; involucre hemispheric,its bracts lanceolate, or ovate-lanceolate, acuminate,ciliate, mostly puberulent, erect or somewhat spread-ing, equalling or shorter than the yellow disk; rays12-15; chaff obtusish, pubescent at the summit;achenes oval, rounded at the summit, glabrous;pappus of I or 2 subulate awns. In dry soil, Pennsylvania and Ohio to Wisconsin, Ne-braska, West Virginia, Georgia and Texas. 486 COMPOSITAE. Vol. III.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
