NOMENCLATURE OF THE BRITISH HEPATIC^, • 301 
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Eaddi into three sections, corresponding to the three divisions of Ra- 
dula which Dumortier afterwards established in his ' Sylloge Jringer- 
mannidearum * (1831), and to which he gave the sectional names of- 
L Eadulotypus ; II. Scapania ; and III. FlagiocJiila. These sections 
were, in 1836, raised into genera byNees and Montagne, who retained 
the original name, Radiila, for the first gemis, and adopted Dnmor- 
~ tier's sectional names for th^ other two. Martinellius was divided by 
■ 
Gray. into two sections: a^ equal to Radula and Scapania ; and 5, 
equal to Plagiochila, The synonymy of Gray's genus is accordingly 
as follows : 
■ M, cotnplanatus^ Gray =^ Radula complanata^ Dumort. 
M. voluius = R, voluta^ Tayl. 
M. aquileffius=R. aquilegia^ Tayl. 
Scapania compacta^ Lindbg. = M. resiipinatus^ Gray. 
S, nndnlafa^ Nees=JS/. nndidatus. Gray. 
S. umbrosa, Nees=il/". nmbrostis. Gray, 
8. planifoUa^ 'Nees^^M, plamfolms, Gray. 
5^, nemorosaj Nees=M. nemorosiis. Gray. 
PlagiQcJiila asplenioides ^ N- and M.=^J[/. asplenioides^ Gray. 
P. spimdosaj Nees and Mont.=iI/. spimdostis, Gray. 
P. decipienSi Nees and Mont.=:Jf. decipiens^ Gray. 
Under the name MyliuSy Gray placed three species, viz. Junger- 
mannia Taylorij which is a true Jungermannia ; the minute J, aineifolia, 
the fructification of which is yet unknown ; and J. polyantJius^YiWch has 
been separated by Corda as the type of the genus CheiloscypJios, 
Mglius cannot consequently be retained ; it is the only one of Gray's 
genera of Hepaticce that was based on insufficient data. 
Cavekdishia, Gray,- p. 690 = Madot/ieca, Dumort. Comment. Bot. 
p. Ill (1822). 
C. laevigata J Gray=ilf. l<cvigatay Dumort. 
C, platgp/iglla. Gray = M. platgphglla, Dumort. 
C. rlvula?*is=^M. rividaris^ Nees. 
C po7'ella-=M, porella^ Nees. 
The restoration of Gray's genus CavendisJda will necessitate the 
adoption of another designation for the genus of Ericacem to which 
Lindley gave the same name in 1835, Bot. Eeg. letterpress io pi. 1791. 
Marchesinds, Gray, p. 6S9 = Phragmicoma, Dumort. Comment. 
Bot. p. 112 (1822). 
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