. 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. s decapetalus L. Sp. PI. 905. 1753. Perennial by branched, sometimes thickened root-stocks ; stem slender, glabrous or nearly so, branchedabove, i°-5° high; branches puberulent. Leavesthin or membranous, 3-8 long, i-3 wide, ovate orovate-lanceolate, the lower all opposite and slender-petioled, the upper commonly alternate, all usuallysharply serrate, roughish above, finely bu
. 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. s decapetalus L. Sp. PI. 905. 1753. Perennial by branched, sometimes thickened root-stocks ; stem slender, glabrous or nearly so, branchedabove, i°-5° high; branches puberulent. Leavesthin or membranous, 3-8 long, i-3 wide, ovate orovate-lanceolate, the lower all opposite and slender-petioled, the upper commonly alternate, all usuallysharply serrate, roughish above, finely but oftensparingly pubescent beneath, acuminate, the roundedor truncate base decurrent on the petiole; heads nu-merous, 2-3broad; involucre hemispheric, its bractslinear-lanceolate, acuminate, hirsute, long-ciliate,spreading, often longer than the yellow disk; rays8-15, light yellow; chafT entire or 3-toothed, pubes-cent at the apex; achenes glabrous; pappus of 2subulate awns. In moist woods and along streams, Quebec to Michi-gan, Georgia, Tennessee and Missouri. Helianthus scrophulariaefolius Britton, from nearWoodlawn, New York, differing by laciniate-serrateleaves, is probably a race of this
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
