Bidens eatonii Fernald
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - Glabrous annual 2–7 dm; lvs lanceolate, long-acuminate, serrate, often with 1 or 2 prominent lateral lobes, the blade 4–12 cm × 7–20 mm, attenuate into a slender or wing-margined petiole 1–3.5 cm; heads erect, discoid or shortly radiate, subcylindric to narrowly campanulate, the disk 5–12 mm wide, the fls 7–30; outer invol bracts mostly 3–5, foliaceous, narrow, erect and surpassing the disk; achenes flat or compressed-quadrangular, ± striate and with a strong median rib on each face, smooth except for a few scattered appressed hairs, 6–11 × 1–2 mm; pappus of 2–4 retrorsely or antrorsely barbed awns, mostly less than half as long as the achene, sometimes much reduced; 2n=48. Estuaries; Que. to N.Y. Aug., Sept.
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Common Names
New England estuarine beggar-ticks