. 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. 4. Bidens comdsa (A. Gray) Wiegand. Leafy-bracted Tickseed. Fig. 4508 B. connata var. comosa A. Gray, Man. Ed. 5, 261. 1867. B. comosa Wiegand, Bull. Torr. Club 24: 436. 1897. B. riparia Greene, Pittonia 4: 261. 1901. B. acuta (Wiegand) Britton, Man. 1001. 1901. Annual, glabrous; stem erect, branched, 6'-4i° high, straw-colored. Leaves short-petioled, or sub- s
. 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. 4. Bidens comdsa (A. Gray) Wiegand. Leafy-bracted Tickseed. Fig. 4508 B. connata var. comosa A. Gray, Man. Ed. 5, 261. 1867. B. comosa Wiegand, Bull. Torr. Club 24: 436. 1897. B. riparia Greene, Pittonia 4: 261. 1901. B. acuta (Wiegand) Britton, Man. 1001. 1901. Annual, glabrous; stem erect, branched, 6'-4i° high, straw-colored. Leaves short-petioled, or sub- sessile, lanceolate to elliptic-lanceolate, coarsely ser- rate with mostly smaller teeth than in B. connata, tapering to each end, the petioles broadly margined; heads several or numerous, 4"-iJ" broad; outer bracts of the involucre linear, spatulate or lanceo- late, foliaceous, erect or spreading, often toothed, 2-4 times as long as the head; rays none; corollas mostly 4-lobed, pale greenish yellow; stamens and style included; achenes larger, 3i"-5i" long, evenly cuneate, very flat; pappus awns commonly 3, down- wardly barbed, somewhat shorter than the achene. In wet soil, Massachusetts to Illinois, North Dakota, New Jersey, West Virginia, Kentucky and Kansas. Leaves thicker and paler than in B. connata. 5. Bidens bidentoides (Nutt.) Britton. Swamp Beggar-ticks. Fig. 4509. Diodonta bidentoides Nutt. Trans. Am. Phil. Soc. (II) 7: 361. 1841. Coreopsis bidentoides T. & G. Fl. N. A. 2: 339. 1842. B. bidentoides Britton, Bull. Torr. Club 20 : 281. 1893. Closely resembles B. connata, glabrous through- out; stem branched, i°-4° high. Leaves similar, lanceolate, sharply serrate, petioled, or the upper sessile and entire, acuminate at the apex, nar- nowed at the base; involucre narrowly or be- coming somewhat broadly campanulate, its outer bracts linear, foliaceous, not ciliate, usually much exceeding the oblong inner ones; rays none, or rarely prese
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
