is a Re ny 
‘Lichenes of New England. * A51 
Foliacei, and Chulescentes. These are. subdivided 
into twenty-two Tribes, to which Tribes substantive 
names, as of Genera, are given. Still the Linnean 
genus Lichen is retained, and each species is. n med 
as of this genus, with the addition in each case of a 
synonym, in which the generic character of the group 
called a Tribe, is supposed. Thus, Tribe 23, is Cla- 
donia ; the first species is Lichen uncialis ; the syno- 
nym, placed side by side with the vulgar name, is 
Cladonia uncialis. , None of these synonymous names, 
and none of these Tribes, could be available in their 
present condition, or until they were regularly set 
. forth in another work. And Acharius always cites 
his * Prodromus," as a Linnean system, without re- 
2 rd to the improved arrangements, which, as has 
hown, were only hinted at in it. Somie of the 
ese Tribes, he afterwards applied to 
others he does not appear to have made 
n 
genera, but 
further use of. Some of these latter have, however, | 
been adopted in other books, as Physcia, Imbricaria, 
&c.; which may be found in the French Flora of 
La Marck and: De Candolle, and various works after 
this standard, but not in later authors.: To look a mo- 
ment at the Tribes of the “ Prodromus," we find in 
the Tribe Patellaria, all the lichens which constitute 
the later genera Lecidea and Lecanora. "The former 
of these names, which is adopted from Hoffman, has 
priority to those of Acharius, and Hoffman's arrange- 
ment is restored by Sprengel, Wallroth, and other 
later writers, with various modifications. The Tribes 
Beomyces and ‘Cladonia, afterwards confounded 
by Acharius and finally again separated, are here 
the 
is 
