. 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. 4. Bidens comosa (A. Gray) Wiegand. Leafy-bracted Tickseed. Fig. 4508 B. connata var. comosa A. Gray, Man. Ed. 5, 261. comosa Wiegand, Bull. Torr. Club 24: 436. riparia Greene, Pittonia 4: 261. acuta (Wiegand) Britton, Man. looi. 1901. Annual, glabrous; stem erect, branched, 6-4h°high, straw-colored. Leaves short-petioled, or sub-sessile, lanceolate to
. 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. 4. Bidens comosa (A. Gray) Wiegand. Leafy-bracted Tickseed. Fig. 4508 B. connata var. comosa A. Gray, Man. Ed. 5, 261. comosa Wiegand, Bull. Torr. Club 24: 436. riparia Greene, Pittonia 4: 261. acuta (Wiegand) Britton, Man. looi. 1901. Annual, glabrous; stem erect, branched, 6-4h°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, i-ii broad; outerbracts of the involucre linear, spatulate or lanceo-late, foliaceous, erect or spreading, often toothed,2-4 times as long as the head; rays none; corollasmostly 4-lobed, pale greenish yellow; stamens andstyle included ; achenes larger, 3¥-s¥ long, evenlycuneate, 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, Kentu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
