Ranunculus ambigens S.Watson
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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
Ranunculaceae
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Scientific Name
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Description
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Species Description - Stems hollow, rooting from the lower nodes, to 1 m, ascending; cauline lvs with dilated, sheathing petiole and well defined, lanceolate blade to 15 × 3 cm, usually denticulate; pet 5–10 mm, equaling or a little exceeding the sep; achenes 1.5–2 mm, the horizontal beak 1–1.3 mm. Swamps, marshes, and shores, mostly in heavy soil; Me. to Minn., s. to Va., Tenn., and La. June–Sept. (R. obtusiusculus Raf., probably misapplied)
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Common Names
water-plantain spearwort