. 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. 16. Helianthus Kellermani BrittenKellermans Sunflower. Fig. 4476. Helianthus Kellermani Britton, Manual 994. 1901. Stem 6°-io° high, very smooth, much ^branch-ed above, the branches slender. Leaves nar-rowly elongated-lanceolate to linear-lanceolate,drooping, rather thin, distantly serrate withvery small teeth, long-acuminate at the apex,attenuate at the base into short petio
. 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. 16. Helianthus Kellermani BrittenKellermans Sunflower. Fig. 4476. Helianthus Kellermani Britton, Manual 994. 1901. Stem 6°-io° high, very smooth, much ^branch-ed above, the branches slender. Leaves nar-rowly elongated-lanceolate to linear-lanceolate,drooping, rather thin, distantly serrate withvery small teeth, long-acuminate at the apex,attenuate at the base into short petioles or theupper sessile, scabrate and sparingly pubes-cent on both surfaces, pinnately veined, thelower about 8 long and 7 wide; branches ofthe inflorescence pubescent; bracts of the in-volucre linear-lanceolate, about 7 long, and iwide or less at the base, ciliate, long-acumi-nate; rays golden-yellow, I-if long; chaff ofthe receptacle linear. Dry soil, vicinity of Columbus, Ohio. 17. Helianthus divaricatus L. Rough orWoodland Sunflower. Fig. 4477. Helianthus divaricatus L. Sp. PI, 906. 1753. Perennial by slender rootstocks; stem glabrousthroughout, or pubescent at the summit, slender,2°-7° high. Le
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
