Lemna obscura (Austin) Daubs

Little duckweed (en)

Species

Angiosperms > Alismatales > Araceae > Lemna

Characteristics

Roots to 15 cm, tip mostly rounded; sheath not winged. Stipes white, small, often decaying. Fronds floating, 1 or 2--5 or more, coherent in groups, obovate, flat or gibbous, 1--3.5 mm, 1--1.5 times as long as wide, margins entire; veins 3, greatest distance between lateral veins near middle; very distinct papillae near apex, some smaller indistinct ones on midline of upper surface; lower surface very often red colored (more intensely than on upper), coloring beginning at attachment point of root, lower upper surface sometimes with red spots; air spaces shorter than 0.3 mm; distinct turions absent. Flowers: ovaries 1-ovulate, utricular scale with narrow opening at apex. Fruits 0.5--0.7 mm, not winged. Seeds with 10--16 distinct ribs, staying within fruit wall after ripening. 2n = 40, 42, 50.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention evergreen
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Hardiness (USDA) 4-9

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Images

Lemna obscura unspecified picture

Distribution

Lemna obscura world distribution map, present in Åland Islands, Bahamas, Ecuador, Georgia, Nicaragua, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:137290-2
WFO ID wfo-0000224450
COL ID 3T4SM
BDTFX ID -
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Lemna obscura Lemna ecuadorensis Lemna minor var. obscura Lemna minor var. colorata