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THE GENUS HALIMEDA 165 
Orchard-grass (a name still used in North America), which implies 
that the grass grows in plantations of apple-trees, as indeed it 
does, though it is not less frequent in meadows and hedges; he 
would on this account have coined for it the name Orchardia, after 
the analogy of Salicaria of Tournefort, etc., had he not been afraid 
of bitter criticism; eventually he made the new name Trachypoa, 
in reference to the comparative roughness of the grass, and its 
botanical relations; thus (p. 859) the genus appears under this name 
and the species as 7’. vulgaris Bub., accompanied with copious refe- 
rences and synonymy ranging from Dalechamp down to Asa Gray. 
he composition of the work occupied forty years; the first 
draft was completed Feb. 5th, 1856, followed by five years of 
general revision. It was first concluded Dec. 15th, 1873; further 
revised Feb. 13th, 1875; and finally settled by the author July 25th, 
1880, rather more than eight years before his death. The editor, 
Professor O. Penzig, of Genoa, has faithfully carried out the 
express wishes of the author in offering to the public this laborious 
work in all its originality. W. P. Himew. 
The Genus Halimeda. By Eruet Saret Barron. (Siboga-Expeditie, 
Edited by Dr. Max Weser. Brill, Leiden.) 
Kipeppep in the excellent series of monographs—the outcome 
of his remarkably successful expedition in the ‘‘ Siboga’’—edited 
by Prof. Weber, there is some danger of Miss Barton’s admirable 
