. 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. 376 COMPOSITAE. Vol. III. i6. CHRYSOTHAMNUS Nutt. Trans. Am. Phil. Soc. (II) 7: 323. 1840. Low shrubs, with equably leafy branches, hard wood, linear leaves, and discoid headsof yellow perfect flowers. Heads narrow, 5-7-flowered. Involucre oblong to narrowlycampanulate, its bracts more or less keeled, thin, or papery, impricated in several series,often so as to form 5 vertica
. 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. 376 COMPOSITAE. Vol. III. i6. CHRYSOTHAMNUS Nutt. Trans. Am. Phil. Soc. (II) 7: 323. 1840. Low shrubs, with equably leafy branches, hard wood, linear leaves, and discoid headsof yellow perfect flowers. Heads narrow, 5-7-flowered. Involucre oblong to narrowlycampanulate, its bracts more or less keeled, thin, or papery, impricated in several series,often so as to form 5 vertical rows. Corolla 5-toothed. Anthers obtuse at the base. Style-branches exserted, their appendages subulate to filiform. Achenes narrow, mostly of copious capillary roughened bristles. [Greek, golden-bush.] About 30 species, natives of western North America. Type species : Chrysothamniis pumilus Nutt. Heads about 6 high ; involucral bracts obtuse or mucronulate. i. C. graveolens. Heads 7-io high; involucral bracts subulate-tipped. 2. C. I. Chrysothamnus graveolens (Nutt.) Greene. Fetid Rayless Golden-rod. Fig. 4204. Chrysocoma graveolens Nutt. Gen. 2: 136. graveolens A. Gray, Proc. Am. Acad. 8: 644. graveolens Greene, Erythea 3:- loS. 1S95. Sparingly tomentose above, or glabrate,much branched, very leafy, i°-42° high,odorous. Leaves linear, i-3 long, i-2wide; heads 5-6 high, very numerous andcrowded in terminal compound corymbosecymes; rays none; involucre narrowly cam-panulate, acute at the base, its bracts oblongor linear-oblong, acute or acutish, imbri-cated in about 4 series; achenes linear;pappus-bristles soft, copious. In sterile, especially alkaline soil, Montanato western Nebraska, Utah and New in our first edition in the C. nanseosa(Pursh) Britton, a densely tomentose farwestern species. Rabbit-brush. 2. Chrysothamnus Howardi (Parry)Greene. Howards Rayless Golden-rod. Fig. 4205. Lin
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
