76 
CARUINGTOn’h BRITISH IIEPATICiE. 
that the letterpress is in arrear of the plates. It is sincerely to 
be hoped that Dr. Carrington will be induced to proceed forth- 
with with the work, and complete that which he has so well 
commenced, and which no one is more competent to bring to a 
satisfactory conclusion. 
CRYPTOGAMIC DAY OF THE ‘‘ CARADOC.” 
The “ Caradoc ” Club constituted its annual excursion “ a day 
devoted specially to Cryptogamic Botany,” and though content to 
follow the “Woolhope” at a humble distance, there is no reason 
why the Shrewsbury meeting should not hereafter become a day of 
remembrance for Cryptogamists. The two devotees of Fungology 
who took part in the excursion, expressed themselves well satisfied 
with the new, or rare, acquisitions they made during the day. 
CONSPECTUS OF THE GENERA OF BRITISH 
LICHENS, ACCORDING TO THE MORE RECENT 
NYLANDERIAN ARRANGEMENT. 
By The Rev. J. M. Crombie, F.L.S. 
During the past few years Dr. Nylander has from time to time 
given indications in the Flora and other Lichenological Opuscula 
of various alterations and emendations on his former systematic 
arrangement of Lichens. As this classification (previously kindly 
communicated to myself in Hit.) has now been so far published in 
two recent Lichenological brochures, viz., “ Index lichenum hyper- 
boreorum,” by Dr. Stizenberger, and “ Flora Kareliae Onegensis,” 
Part II., by M. J. P. Norrlin, it may be of service to British 
Lichenists that I here give an outline of its main features in so 
far as relates to the genera of the Lichen-Flora of our own 
Islands. 
Family I. — Byssacei. 
Genera. 
C Sirosiphon, Ktz. 
Tribe I. Sirosiphei ... ... j Gonionema, Nyl. 
(. Spilonema, Born. 
Tribe II. Pyrene psei ... 
Tribe III. Homopsidei... 
C Euopsis, Nyl. 
■ " C Pyrenopsis, Nyl. 
... Ephebe, Fr., Born. 
Family II. — Collemacei. 
Tribe I. Lichinei 
Tribe II. Collemei 
Tribe III. Pyrenidiei 
Lichina, Ag. 
Pterygium, Nyl. 
Leptogidium, Nyl. 
Synalissa Dk., Nyl. 
Collema Acb. Nyl. 
Leptogium Ach. Nyl, 
, Collemopsis, Nyl. 
Pyrenidium, Nyl. 
