. 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. en-rod. Fig. 4203. Chrysocoma BoT. Am. 2 : loi. 1803. Bigelozvia nudata DC. Prodr. 5: 329. 1836. C. nudata Britton, Mem. Torr. Club 5: 317. 1894. Glabrous, erect, simple, i°-22° high. Lowerand basal leaves spatulate, obtuse, or obtusish,;i-6 long, 3-6 wide, attenuate into a marginedpetiole, stem leaves distant, small, linear or subu-late ; heads numerous, 2-^
. 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. en-rod. Fig. 4203. Chrysocoma BoT. Am. 2 : loi. 1803. Bigelozvia nudata DC. Prodr. 5: 329. 1836. C. nudata Britton, Mem. Torr. Club 5: 317. 1894. Glabrous, erect, simple, i°-22° high. Lowerand basal leaves spatulate, obtuse, or obtusish,;i-6 long, 3-6 wide, attenuate into a marginedpetiole, stem leaves distant, small, linear or subu-late ; heads numerous, 2-^ high, crowded in acompound terminal corymbose cyme; involucrenarrowly campanulate, acute at the base, its bractscoriaceous, appresscd, linear-oblong, imbricatedin 3 or 4 series, the outer much smaller than theinner; achenes short-turbinate; pappus-bristlesrigid ; edges of the depressions in the receptacleprolonged into subulate teeth. In moist pine-barrens. New Jersey (?) to Floridaand Texas. Chondrophora virgata (Nutt.) Greene, with nar-rowly linear basal loaves, or some of them linear-spatulate, though originally cited by Nuttall as fromNew Jersey, is not definitely known from north ofNorth 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. H
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
