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Wayne's Articles About Wolffia & Other Duckweeds In The
Guinness Book of World Records & Jepson Flora of California

Because of data from comparative DNA, members of the duckweed family (Lemnaceae) are now placed in the large arum family (Araceae). In the 2012 Jepson Flora of Calif. (W.P. Armstrong pp. 1300-1302) this includes 16 species in 5 genera: Landoltia, Lemna, Spirodela, Wolffia, & Wolffiella. They can be accessed with Jepson Eflora at following links:

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