Potamogeton confervoides Rchb.
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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
Potamogetonaceae
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Scientific Name
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Description
Species Description - Stems 1–8 dm, slender and delicate, repeatedly branched; rhizome elongate; lvs numerous, all submersed, very soft and delicate, flat, 2–5 cm × 0.25 mm, tapering to a hair-like tip, 1-nerved, the space from the midrib to the margin entirely lacunar; stipular sheaths axillary, obtuse, 1–5 cm, seldom longer, evanescent; winter-buds fusiform, 1–2 cm; peduncles usually solitary and terminal below, (3–)5–25 cm, slender below, somewhat clavate; spike capitate, few-fld, 5–12 mm; achenes turgid, broadly obovoid, 2–3 mm, with a sharp dorsal keel flanked by a pair of more obscure ones. Shallow, acid waters; Nf. to Pa., N.J., and Mich.
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Common Names
alga-pondweed