. 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 102d meridian. Botany; Botany. Genus 69. THISTLE FAMILY. 489 1. Ximenesia encelioides Cav. Golden Crownbeard. Fig. 4491. Ximenesia encelioides Cav. Icon. 2: 60. pi. 178. 1793. Verbesina encelioides A. Gray, Syn. Fl. 1: Part 2, 288. Annual; stem densely puberulent, much branched, l°-2° high. Leaves deltoid-ovate or deltoid-lanceo- late, thin, 2'-4' long, acuminate, acute or blunt at the apex,
. 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 102d meridian. Botany; Botany. Genus 69. THISTLE FAMILY. 489 1. Ximenesia encelioides Cav. Golden Crownbeard. Fig. 4491. Ximenesia encelioides Cav. Icon. 2: 60. pi. 178. 1793. Verbesina encelioides A. Gray, Syn. Fl. 1: Part 2, 288. Annual; stem densely puberulent, much branched, l°-2° high. Leaves deltoid-ovate or deltoid-lanceo- late, thin, 2'-4' long, acuminate, acute or blunt at the apex, coarsely dentate, or even laciniate, green and minutely pubescent above, pale and densely canescent beneath, all alternate, or the lowest opposite, nar- rowed at the base into naked or wing-margined peti- oles, which are often provided with dilated append- ages at the base; heads several or numerous, i'-2' broad; involucre hemispheric, about ¥ high, its bracts lanceolate, canescent; rays 12-15, bright golden yel- low, 3-toothed; achenes of the disk-like flowers obo- vate, winged, pubescent, their pappus of 2 subulate awns, those of the ray-flowers rugose, thickened, often wingless. In moist soil, Kansas to Texas, Arizona and Mexico, and occasional in waste grounds farther east. Also in Florida and widely distributed in warm regions as a weed. 70. COREOPSIS L. Sp. PI. 907. 1753. Anual or perennial, mostly erect herbs, with opposite leaves, or the upper alternate, and large long-peduncled heads of both tubular and radiate flowers, the rays yellow, or brown at the base, or brown throughout, or pink. Involucre usually hemispheric, its bracts in 2 distinct series, all united at the base, those of the outer series commonly narrower and shorter than the inner. Receptacle flat or slightly convex, chaffy, the chaff flat or concave. Ray- flowers neutral. Disk-flowers perfect, fertile, their corollas with slender tube and broader S-toothed limb. Anthers mostly entire at the b
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
