Taxonomy
Classification
Group: Spermatophytina (Spermatophytes)
Family: Araceae (Arum Lily family)
Genus: Wolffia (Watermeal)
Synonyms
Wolffia arrhiza
Lemna arrhiza
Wolffia michelii
Related species
Wolffia arrhiza (L.) Wimm. - Rootless Duckweed
Traits
<b>Very small aquatic plants, consisting only of floating foliose stem-elements</b>, almost always only with vegetative propagation. <span class="v1">inflorescence:</span> flowers tiny (often completely absent), inserted in an indentation at the margin of the stem-el...
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Distribution
Distribution in Europe
Legend
The colours represent the floristic status of the species in the respective region. Green indicates native occurrences, light green naturalized occurrences. Adventive occurrences are represented by light yellow shades and plants that are cultivated (but rarely occur in the wild) are dark yellow. Grey colours are used, if the floristic status of species is unknown or uncertain.
Distribution in Germany
Legend
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Natural, established occurences
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Artificial occurences
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The color intensity reflects the species' abundance
Data: Floristische Kartierung Deutschlands (Stand 2013), Bundesamt für Naturschutz (www.floraweb.de)
Ecology
Status
Habitat
waters, bogs, sedge-lands
in alkaline, wet habitats