OregonFlora: Lemna aequinoctialis vs. Lemna valdiviana

	Lemna aequinoctialis	Lemna valdiviana
		Valdivia duckweed
Roots		up to 1.5 cm long.
Turions		absent.
Plant bodies		floating on the surface, rarely submersed, elliptic to oblong; (1)2–4(5) mm long, 1.3–3 times longer than wide; thin, 1 vein; greater than 75% the distance from root attachment to apex; lower surface flat, green; upper surface flat, green; and usually smooth, sometimes with papillae along the midline, generally in clusters of 4–8.

	Lemna aequinoctialis	Lemna valdiviana
Distribution	[WildflowerSearch map] [BONAP county map]	[WildflowerSearch map] [BONAP county map]
Discussion		Freshwater. 800–900 m. Owy. CA, ID, NV; throughout North and South America in temperate to tropical climates. Native.
Source		Flora of Oregon, volume 1, page 149 Katie Mitchell
Sibling taxa	L. gibba, L. minor, L. minuta, L. trisulca, L. turionifera, L. valdiviana	L. gibba, L. minor, L. minuta, L. trisulca, L. turionifera
Synonyms		Lemna cyclostasa
Web links	Local floras: CA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Lemna aequinoctialis

Lemna valdiviana

Valdivia duckweed

Roots

up to 1.5 cm long.

Turions

absent.

Plant bodies

floating on the surface, rarely submersed, elliptic to oblong; (1)2–4(5) mm long, 1.3–3 times longer than wide; thin, 1 vein; greater than 75% the distance from root attachment to apex;

lower surface flat, green;

upper surface flat, green; and usually smooth, sometimes with papillae along the midline, generally in clusters of 4–8.