Comments
provided by eFloras
I know of no specimens of Lemna perpusilla from Connecticut or New Hampshire.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Roots to 3.5 cm, tip usually sharp pointed; sheath narrowly winged at base (wing 2--3 times as long as wide). Stipes white, small, often decaying. Fronds floating, 1 or 2--few, coherent in groups, ovate-obovate, flat, 1--4 mm, 1--1.7 times as long as wide, margins entire; veins 3, greatest distance between lateral veins near or distal to middle; 1 distinct papilla near apex on upper surface, 2--3 very distinct papillae above node; anthocyanin absent, no reddish color; air spaces much shorter than 0.3 mm; distinct turions absent. Flowers: ovaries 1-ovulate, utricular scale open on 1 side. Fruits 0.7--1 mm, not winged. Seeds with 35--70 indistinct ribs, staying within fruit wall after ripening. 2n = 40 (U), 42 (G).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
All temperate and tropical regions.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Que.; Ark., Conn., Del., D.C., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Minn., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., Tenn., Tex., Vt., Va., W.Va., Wis.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Flowering/Fruiting
provided by eFloras
Flowering (frequent) late spring--fall.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Mesotrophic to eutrophic, quiet waters in temperate regions with relatively mild winters; 0--600m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Lemna perpusilla: Brief Summary
provided by wikipedia EN
Lemna perpusilla, the tiny duckweed or minute duckweed, is a species of aquatic flowering plant in the family Araceae. It is native to the central and eastern United States (but not the Deep South), and Quebec in Canada, and has been introduced to various locations around the world. It prefers still or very slowly moving waters.
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