Stuckenia vaginata

(Turczaninow) Holub

Folia Geobot. Phytotax. 19: 215. 1984

Common names: Bigsheath-pondweed potamot engainé
Basionyms: Potamogeton vaginatus Turczaninow Bull. Soc. Imp. Naturalistes Moscou 27(2): 66–67. 1854
Treatment appears in FNA Volume 22.

Stems freely branching proximally to distally, terete, 20–50(–70) cm. Leaves: length and width of those on main stem only slightly larger than those on branches; stipules with stipular sheaths inflated 3–5 times stem thickness, 2–9 cm, ligule absent, obscure, or to 0.2 mm; blade narrowly filiform to linear, 1–10(–15) cm × 0.2–2.9 mm, apex rounded, obtuse, or slightly notched; veins 1(–3). Inflorescences: peduncles terminal, erect, slender, 3–15 cm; spikes moniliform, 10–80 mm; verticels 3–12. Fruits brown, obliquely obovoid, 3–3.8 mm × 2–2.9 mm; beak inconspicuous. 2n = 78.


Phenology: Flowering late summer–fall.
Habitat: Deep lakes and ponds
Elevation: 0–2300 m

Distribution

V22 374-distribution-map.jpg

Alta., B.C., Man., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Colo., Idaho, Minn., Mont., N.Dak., Oreg., S.Dak., Utah, Wash., Wis., Wyo., Eurasia.

Discussion

One hybrid, P. pectinatus × P. vaginatus (= P. × bottnicus Hagström), with this species as a putative parent has been described under the genus Potamogeton.

Lower Taxa

None.

... more about "Stuckenia vaginata"
Robert R. Haynes +  and C. Barre Hellquist +
(Turczaninow) Holub +
Potamogeton vaginatus +
Bigsheath-pondweed +  and potamot engainé +
Alta. +, B.C. +, Man. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Colo. +, Idaho +, Minn. +, Mont. +, N.Dak. +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wis. +, Wyo. +  and Eurasia. +
0–2300 m +
Deep lakes and ponds +
Flowering late summer–fall. +
Folia Geobot. Phytotax. +
correll1970a +, harada1956a +, hellquist1988a +, hind1980a +, j1958b +, l1954a +, l1981b +, moore1913b +, palmgren1939a +, preston1995a +, stern1961b +  and taylor1968a +
Coleogeton +
Stuckenia vaginata +
Stuckenia +
species +