Potamogeton ogdenii Hellq. & R.L.Hilton
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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 freely branching, slender but rigid, commonly with paired glands at the nodes; rhizome scarcely developed; lvs all submersed, linear, cuspidate to aristate, 5–10 cm × 1–3 mm, 3–9(–13)-veined, commonly with 1 or 2 rows of lacunar cells on each side of the midvein; stipular sheaths axillary, free, brown (white), 1–2 cm, becoming fibrous at the tip; winter-buds uncommon, sometimes with the inner lvs rolled into a hard, fusiform structure; peduncles mostly terminal and erect, 1–2 cm, slightly clavate; spike cylindric, 5–11 mm, with 2–4 whorls of fls; fr rarely produced, suborbicular, plump, 2.5–3 mm excluding the prominent 0.5 mm beak, obscurely or not at all keeled. Alkaline waters; Mass., Vt., and N.Y.
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Common Names
Ogden's pondweed