NOMENCLATURE OF THE BRITISH HEPATIC^. 299 
however, have the right of priority over Gray's, and cousequeiitly the 
following six genera must be at once placed among the synonyms : 
Strozzius, Gray, p. 6S2 = Jleboulia, Fegatella^ Haddi, 1818. 
Eerverus^ Gray, p. QSo = Met2ffena, Kaddi, 1820. 
Faj)a, Gray, p. &SQ = Pema, Haddi, 1820. 
. Mauroceniiis, Gray, p. 6S1 =Fossombroma, "Raddi, 1S20. 
Salviatus^ Gray, p. &ST=zFrt^Uama^ Eaddi, 1820. 
Kantius, Gray, p. 7Q6 = Cal2/poffeia, Kuddi, 1820. 
And to these must be added Fandulj?hi?iius, Gray, which is equal to 
Zejemia, Libert. 
In 1822, Dumortier published his * Commentationes Botanicse,' 
which contained an *' Essai d'une Monographic des Jongermannes.' 
In this he groups the species under different generic titles, and gives 
diagnoses of the genera. But at this time he knew nolhin": of Eaddi's 
papers, and though, in 1831, when he published his 'Sylloge Junger- 
mannideai'um Europse Indigenarum' he had heard of them, be says in 
his preface that he had been unable to procure a copy, and was, there- 
fore. Ignorant of what Kaddi had done. 
Corda established several additional genera in his ' Genera Hepati- 
carum," published in Opitz's 'Beitrage' (1828), and in his *' Mono- 
graph of the German Jungermanniee " (1830-35), which forms part of 
Sturm's * Deutschlands Plora.' 
Neither Corda nor Dumortier were aware that Gray had preceded 
them in their work, — and, indeed, to this day his labours have been 
unrecognised. There were reasons for ignoring the work when it was 
published — reasons which fill one with shame to think that party-feeling 
and personal illwill could have influenced men of science in England 
to such an extent some forty years ago. But, notwithstanding the 
obstructions and difficulties thrown in the way of publication, and the 
illwill exhibited for years to both father and son, the views they ad- 
vocated made progress, and the Natural System, in the end, over- 
came all opposition. The unfortunately successful attempt to ignore 
the work at home, no doubt helped to prevent its circulation abroad ; 
and so the genera of Dumortier and Corda have been adopted even by 
British botanists. But Gray's names have the undoubted priority, 
and consequently the following changes must be introduced into tlie 
nomenclature of our British species. * The foreign species that have 
been referred to some of the following genera are very numerous, so 
X 2 
