Spirodela

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Spirodela

Description

Small water plants, floating at the surface. Inflorescence 1, lateral, developing from one of the budding pouches, consisting of 1 ♀ and 2 ♂ flowers, enclosed by a membranous spathe. Fruit asymmetric, slightly or distinctly winged. Seed smooth or longitudinally ribbed.

Distribution

Arctic regions absent, worldwide present
Worldwide, the Arctic regions excepted, consisting of 4 spp.

Citation

SCHLEID. - in Bot. Jahrb. 1895: 283
HARTOG & PLAS - in Blumea. 1970: 358
HEGELM., Lemnac. 1868: 147
ROUY - in Fl. Fr. 1912: 285
DAUBS, Monogr. Lemnac. 1965: 8
HARTOG - in Taxon. 1970