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XX. — Some Account of the Marine Botany of the Colony of Western Australia. 
By W. H. Haevey, M. D., M. R. I. A., Keeper of the Herbarium of the Uni- 
versity of Dublin., <m^ Professor of Botany to the Royal Dublin Society, ^c. 
Read December 11, 1854. 
J- HE land vegetation of Western Australia is now tolerably well known, 
chiefly through the labours of Mr. James Deummond and of Dr. L. Peeiss, who 
have separately explored almost all the settled districts ; and the former has 
also pushed his researches far to the northward and eastward, beyond the range 
of any colonist’s settlement. Lesser collections of land plants have been made 
by Baron Hugel, Captain Mangles, the late Mrs. Molloy, Mr. J. S. Roe, and 
other amateurs. 
The vegetation of the seaboard of the colony is much less known. Our 
earliest acquaintance with West Australian Algae is derived from small but in- 
teresting collections, made by some of the early French exploring expeditions ; 
and by Dr. Robeet Beown, who accompanied Feindees. Many of the less com- 
mon species of these collections are only known to botanists by description or 
figures. By far the largest series of Algag brought from this coast is that pro- 
cured during four years’ exploration of the colony by Mr. L. Preiss, to whom 
great credit is due for having collected 141 species, as, from the nature of his 
engagements, but little time could be devoted to this branch of botany. 'We 
owe to Dr. Sondee, of Hamburgh, a very able analysis and description of Peeiss’s 
Algrn; and the Dublin University Herbarium is indebted to the liberality of 
Senator Bindee, of the same free city, for a tolerably perfect set of these Algas. 
I have thus had the great advantage of examining authentic specimens of most 
of the new genera and species discovered by Peeiss, and described by Sondee. 
A parcel containing between sixty and seventy species of Western Australian 
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