Lemna.) CXXXVII. LEMNACEX. 163 
from underneath. Stamens usually 2. Ov Ag. with 1 ovule "e 
a very short style.—R. Br. Prod. 345 ; ` Hook. f. Fl. Tasm. ii. 88; 
Muell. Fragm. viii, 188. 
N.S. Wales. Port Jackson, R. Brown; sources ofthe Gwydir, Leichhardt. 
Victoria. Murray River, F. Mueller 
Tasmania, R, irj E still waters, but less frequent than LZ. minor, J. D. 
Hooker, 
Common in the northern hemisphere. Brown's stations for s bo the following 
species are taken from his Prodromus, I have not seen his specim 
Queensland, wc e Apane. ‘Ys Bowman ; Brisbane, Bailey. 
N.S. Wales. Port Jackso 
Victoria. In the Yarra, F. r^ ee 
» R. Brown; ; abundant, J. D. Hooker. 
W. Australia, Drum 
The commonest species in most parts of the area of the genus. 
gibba, Linn. ; Popia: tte 145, t. 11, 12.—Fronds of 
M size and shape of those of Z. minor and cler emitting a single 
m the underside, but nli eevee convex underneath, and the 
ovary has 2 or more ovules 
* e Australia, Oldfield, Drummond, n. 178 ? ; 
Widely spread over the area of the genus, but not so common as ^" minor. 
a Didüclq's specimens have a few flowers and Hegelmaier appears 
te, 
ty Fast Indian) named by him Z. paneicostata certainly appear to me 
to the common thin- fronded L. min 
* L. oligorrhiza, Kurz; 147, t. 16.—Fro 
m sel oua resembling those of L. enis but us 
though ra rely much above 2 lines long, 3- © we d 
2 the underside a cluster of several roots or deci rox 
ial > but som metimes more. Fructification unknown.—L. P 
L. melanorrhiza, F. Muell.; Kurz in Seem. Journ. 1867, 
Entrance of the A ac River, F. Muell. : 
Bee eme East India and the Malayan Archipelago 
