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Key to Salvinia

Salviniaceae

Salvinia

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(c) Ward, Scott G
1 Floating leaves 5-15 mm long; multicellular hairs of the upper leaf surface with 4 free, spreading branches (use 10× magnification)
© Lowell Urbatsch
© Scott Ward
1 Floating leaves to 50 mm long; multicellular hairs of the upper leaf surface with 4 branches joined at their tips, forming a cage-like structure (use 10× magnification)