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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Lemnaceae
Leaves less than 1 cm wide
Lemnaceae
consider the other alternative
Roots present on the undersurface
choose this alternative
reject this alternative
Roots never more than 1 on each
cladode
Lemna
choose this alternative
reject this alternative
Roots variable in number on each
cladode
, often 2–5, only occasionally fewer or more