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Abstract

Marsh plants have generally the widest distribution, and
of the Duckweeds these are no exceptions. Lemna minor,
L., and Lemna trisulca, L., both cosmopolitan species, are the
only plants of this family that have hitherto been recorded
from Tasmania. We now may report Wolffia.
Growing in a marsh near Lewisham, also on Maria
Island.
The genus Wolffia is of quite a different structure.
Instead of floating horizontally, it does so perpendicularly,
exposing an edge to the air and sinking the greater portion
of the frond as an oblique plate. Flowering is unisexual, and
takes place in the centre of the exposed portion. It bears
no root. The following notes are a description of Wolffia arrhiza as found in Tasmania.

Item Type:	Article
Authors/Creators:	Rodway, Leonard
Keywords:	Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title:	Papers and Proceedings of the Royal Society of Tasmania
ISSN:	0080-4703
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	Copyright Royal Society of Tasmania
Item Statistics:	View statistics for this item

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