. 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. 10. Bidens coronata (L.) Fisch. Southern Tickseed-Sunflower. Fig. 4514. Coreopsis coronata L. Sp. PI. Ed. 2, 1281. 1763. Coreopsis aurea Ait. Hort. Kew. 3: 252. 1789. Bidens coronata Fisch.; Steudel, Nom. Ed. 2, 202. 1840. Annual, glabrous or nearly so throughout; stem branched, i°-3° high. Lower leaves petioled, 3-5' long, 3-divided, the terminal segment lance
. 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. 10. Bidens coronata (L.) Fisch. Southern Tickseed-Sunflower. Fig. 4514. Coreopsis coronata L. Sp. PI. Ed. 2, 1281. 1763. Coreopsis aurea Ait. Hort. Kew. 3: 252. 1789. Bidens coronata Fisch.; Steudel, Nom. Ed. 2, 202. 1840. Annual, glabrous or nearly so throughout; stem branched, i°-3° high. Lower leaves petioled, 3-5' long, 3-divided, the terminal segment lanceolate, acute or acuminate, serrate, much larger than the serrate or entire lateral ones; upper leaves much smaller, 3-parted, 3-lobed or undivided, sessile or short- petioled, entire or serrate; leaves rarely all undi- vided; heads numerous, slender-peduncled, i'-a' broad; involucre hemispheric, its outer bracts linear- oblong, obtuse, equalling or slightly exceeding the broader inner ones; rays 6-10, obtuse; achenes broadly cuneate, slightly pubescent, i"-2" long; pap- pus of 2 chaffy blunt divergent somewhat laciniate teeth, rarely with 2 shorter intermediate ones. In wet places, Virginia to Florida and Alabama. July- Sept. 11. Bidens trichosperma (Michx.) Britton. Tall Tickseed-Sunflower. Fig. 4545. C. trichosperma Michx. Fl. Bor. Am. 2: 139. 1803. B. trichosperma Britton, Bull. Torr. Club 20: 281. 1893. Coreopsis trichosperma var. tenuiloba A. Gray, Syn. Fl. 1: Part 2, 295. 1884. Bidens trichosperma tenuiloba Britton, Bull. Torr. Club 20:281. 1893. Annual or biennial, glabrous; stem tall, obscurely quadrangular, much branched, 2°-S° high. Lower leaves petioled, 4'-8' long, pinnately divided into 5-7 lanceolate or linear, acuminate, sharply serrate, in- cised or nearly entire, sessile or short-stalked seg- ments; upper leaves sessile or nearly so, 3-lobed, 3-divided, or entire and linear-lanceolate; heads nu- merous, ii'-2i' broad, long-peduncled; involucre hem
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
