familyLemnaceae
genusLemna

Lemna gibba

Linnaeus
Sp. Pl. 2: 970. 1753.
WeedyIllustrated
Treatment appears in FNA Volume 22. Treatment on page 147.

Roots to 15 cm, tip mostly rounded; sheath not winged. Stipes white, thin, often decaying. Fronds floating, 1 or 2–5 or more, coherent in groups, obovate, often gibbous, 1–8 mm, 1–1.5 times as long as wide, margins entire; veins (3–)4–5(–7) (all originating from node), greatest distance between lateral veins near or distal to middle; papillae often indistinct; upper lower surface sometimes red colored, coloring beginning from margin, lower upper surface occasionally with distinct red spots beginning from margins near apex; largest air spaces longer than 0.3 mm; distinct turions absent. Flowers: ovaries (1–)2–7-ovulate, utricular scale with narrow opening at apex. Fruits 0.6–1 mm, laterally winged. Seeds with 8–16 distinct ribs, falling out of fruit wall after ripening. 2n = 40, 42, 44, 50.


Phenology: Flowering (rather frequent) spring–fall.
Habitat: Eutrophic, quiet waters in temperate regions with mild winters
Elevation: 0–1900 m

Distribution

V22 534-distribution-map.jpg

Ariz., Calif., Ill., Nebr., Nev., N.Mex., Tex., Wyo., northern Mexico, South America, Eurasia, Africa, Atlantic Islands.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Lemna gibba"
Elias Landolt +
Linnaeus +
Ariz. +, Calif. +, Ill. +, Nebr. +, Nev. +, N.Mex. +, Tex. +, Wyo. +, northern Mexico +, South America +, Eurasia +, Africa +  and Atlantic Islands. +
0–1900 m +
Eutrophic, quiet waters in temperate regions with mild winters +
Flowering (rather frequent) spring–fall. +
Weedy +  and Illustrated +
Lemna gibba +
species +