Family: Araceae
Wolffia
Citation:
Horkel ex Schleid., Linnaea 13:389 (1839).
Derivation: After J. F. Wolff, 1778-1806, a German physician and botanist.
Synonymy: Not Applicable Common name: Tiny duckweeds.
Description:
Thallus turgid, more or less ellipsoid or globose, floating at the surface; most of the thallus submerged; lateral pocket 1; roots 0.
Inflorescence breaking through the upper surface of the thallus, composed of 1 female and 1 male flower together in a hollow but without a spathe; male flower consisting of a single stamen with a terminal 1-celled anther; female flower composed of a flask-shaped ovary with 1-several ovules and a solitary terminal style and a concave stigma.
Distribution:
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About 10 species, almost cosmopolitan.
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Biology:
No text
Key to Species:
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1. Emerged face of the thallus flat; thallus depth about equal to the length of the emerged face |
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W. angustata 1. |
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1. Emerged face of the thallus distinctly convex; thallus depth to twice the length of the emerged face |
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W. australiana 2. |
Author:
Not yet available
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