familyLemnaceae
genusLemna

Lemna minuta

Kunth

in A. von Humboldt et al., Nov. Gen. Sp. 1: 372. 1816.

WeedyIllustrated
Synonyms: Lemna minima Philippi Lemna minuscula Herter
Treatment appears in FNA Volume 22. Treatment on page 150.

Roots to 1.5 cm, tip rounded to pointed; sheath not winged. Stipes white, small, often decaying. Fronds floating, 1 or 2–few, coherent in groups, obovate, flat to thickish (but not gibbous), 0.8–4 mm, 1–2 times as long as wide, margins entire; veins 1, sometimes indistinct, very rarely longer than extension of air spaces, not longer than 2/3 of distance between node and apex; with or without small papillae along midline; anthocyanin absent; largest air spaces much shorter than 0.3 mm; turions absent. Flowers: ovaries 1-ovulate, utricular scale open on 1 side. Fruits 0.6–1 mm, not winged. Seeds with 12–15 distinct ribs. 2n = 36 (U), 40 (U), 42 (G).


Phenology: Flowering (very rare) late spring–early fall.
Habitat: Mesotrophic to eutrophic, quiet waters in temperate to subtropical regions with relatively mild winters
Elevation: 0–2600 m

Distribution

V22 318-distribution-map.jpg

Introduced; Ala., Ariz., Ark., Calif., Colo., Fla., Ga., Ill., Ind., Kans., Ky., La., Mich., Mo., Nebr., Nev., N.Mex., Ohio, Okla., Oreg., Tenn., Tex., Utah, Wash., W.Va., Wyo., Mexico, West Indies, Central America, South America, Eurasia (introduced).

Discussion

I know of no specimens of Lemna minuta from Mississippi, but the species is to be expected there.

Selected References

None.

Lower Taxa

None.
... more about "Lemna minuta"
Elias Landolt +
Ala. +, Ariz. +, Ark. +, Calif. +, Colo. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Mich. +, Mo. +, Nebr. +, Nev. +, N.Mex. +, Ohio +, Okla. +, Oreg. +, Tenn. +, Tex. +, Utah +, Wash. +, W.Va. +, Wyo. +, Mexico +, West Indies +, Central America +, South America +  and Eurasia (introduced). +
0–2600 m +
Mesotrophic to eutrophic, quiet waters in temperate to subtropical regions with relatively mild winters +
Flowering (very rare) late spring–early fall. +
in A. von Humboldt et al., Nov. Gen. Sp. +
Weedy +  and Illustrated +
Lemna minima +  and Lemna minuscula +
Lemna minuta +
species +