N° 6 8 ANNÉE 1881 
REVUE BRYOLOGIQUE 
PARAISSANT TOUS LES DEUx Mois 
Les Manuscrits doivent être écrits en français, en latin ou en anglais. 
Sommaire du N° 6. 
On Marsupella Stableri n. sp. and some allied species of European 
Hepaticæ. R. Spruce.— Catalogue des Mousses et Hépatiques d'Ille- 
et-Vilaine (suite). De La Gonezinais.— Bibliographie, — Nouvelles. 
— Table de la 8° année. 
A 
On Marsupella Stableri n. sp. and some allied 
species of European Hepaticæ. 
The first attempt to break up the Jungermania of Rupp and 
Linnæus was made by Raddi in his er Pete 
Etrusca, published in 1820 in the 48th volume of the me- 
moirs of Mathematics and Physics of the Academy of 
Sciences of Modena. Besides that the very limited number 
of the Jungermaniæ of Elruria was quite insufficient to form 
the basis of a division into nalural genera, the author ap- 
pears to have been totally ignorant of the labours of his con- 
temporaries , especially of Hooker’s magnificent monograph 
of the far more numerous British species, which had been 
completed a few years previously. À few only of Raddrs 
genera survive, such as Frullania, Fossombronia, etc. After 
Raddi came Samuel Gray, who, in his Vatural Arrangement 
of British Plants (1821), carved a number of new genera out 
of the British species, merely by adding substantive names 
to the sections and subseclions of Jungermama, in the cons- 
peclus at the end of Hooker’s work, without adding à single 
original observation, and plainly without having examined any 
of the plants themselves, As that conspecius Was intended so- 
__ lely to facilitaie the naming Of 4 so and was confessedly 
in part artificial, the genera founded on it could only by acci- 
dent be thoroughly natural. Hooker indeed had a clear notion 
_of the aflinities of the species he described , and if Gray bad 
_only read over Hooker s detailed descriptions, he would never 
ave confounded under one genus (Martinellius) such very 
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