TaiBIF | Search | All Living Things


Lemna aequinoctialis Welw.
COMMON DUCKWEED
Lemna angolensis Welw ex Hegelm; Lemna paucicostata Hegelm; Lesser duckweed; Lemna trinervis; Lemna paucicostata; Three-Nerved Duckweed

Life   Plantae   Monocotyledoneae   Lemnaceae   Lemna

Links
go to Discover Life's Facebook group

Following modified from Flora of Taiwan, National Taiwan University
   Top | See original

&pull 20q v5.145 20180528: Error 404 Not Found http://tai2.ntu.edu.tw/udth/bin/fot1.exe/browse?bid=5&page=695

Following modified from Taiwan Biodiversity National Information Network
   Top | See original

&pull 20q v5.145 20180528: Error 301 Moved Permanently http://taibnet.sinica.edu.tw/eng/taibnet_species_detail.php?gen=Lemna&spe=aequinoctialis

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
 
All Floras       Advanced Search
FNA Vol. 22 Page 149 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 22 | Lemnaceae | Lemna

7. Lemna aequinoctialis Welwitsch, Bol. Ann. Cons. Ultramar. (Portugal). 55: 578. 1859.

Lemna paucicostata Hegelmaier

Roots to 3 cm; tip usually sharp pointed; sheath winged at base (wing 1--2.5 times as long as wide). Stipes small, white, often decaying. Fronds floating, 1 or 2--few, coherent in groups, ovate-lanceolate, flat, 1--6 mm, 1--3 times as long as wide, margins entire; veins 3, greatest distance between lateral veins near or proximal to middle; 1 often very distinct papilla near apex on upper surface and 1 above node; anthocyanin absent, no reddish color; largest air spaces much shorter than 0.3 mm; distinct turions absent. Flowers: ovaries 1-ovulate, utricular scale open on 1 side. Fruits 0.5--0.8 mm, not winged. Seeds with 8--26 distinct ribs, falling out of fruit wall after ripening. 2n = 40, 42, 50, 60, 80, 84.

Flowering (frequent) spring--fall. Mesotrophic to eutrophic, quiet waters in warm-temperate to tropical regions; 0--1300 mm; Ala., Ariz., Ark., Calif., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Miss., Mo., Nebr., N.Mex., N.C., Okla., S.C., Tenn., Tex., Va., Wis.; West Indies; Central America; South America; s Eurasia; Africa; Atlantic Islands; Indian Ocean Islands; Pacific Islands; Australia.

Some authors did not distinguish between Lemna aequinoctialis and L. perpusilla and used the latter name for both species.

Updated: 2022-12-06 23:30:01 gmt
TaiBIF | Search | All Living Things | Top
© Designed by The Polistes Corporation