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Volume II (1970) - Flora of New Zealand Indigenous Tracheophyta - Monocotyledons except Graminae
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Lemna L.

LEMNA L., 1753

Infl. in a lateral pouch, partly enclosed in spathe. Ovules 1 or more. Seed us. ribbed and transversely striate; operculum prominent. Plants floating upon or beneath water surface, budding from lateral pouches, platelets solitary or many remaining attached together. Platelets mostly orbicular to obovate in outline, symmetric to asymmetric; nerve us. single. Root single, peltately attached. Some spp. pigmented red-purple. About 9 spp., the genus widespread.

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