6 Rhodora [JANUARY 
A REVISION OF THE MT. DESERT HEPATIC LIST. 
ANNIE LORENZ. 
Mr. Desert is popularly regarded as a mountainous island, 
whereas it is really a low,-glacial-drifted region slashed across by the 
granite range of Lafayette National Park. It is difficult to describe 
Mt. Desert to anyone unfamiliar with its delights without being 
suspected of membership in the Bar Harbor Board of Trade. 
As a matter of fact, the hepatic flora is anything but exciting, 
being north German rather than alpine. Furthermore, the mountains 
have been so burned over, except for a few places, that the original 
moss-covering is gone. 
For more details of topography, geology, etc., the reader is referred 
to Rand and Redfield’s Mt. Desert Flora. The original hepatic list, 
determined by Underwood, contained 49 species, and, on recent 
examination of the collection, although there were a few withdrawals, 
the number remained the same, between modern segregations and 
overlooked admixtures. Three of these were new to Maine, including 
Diplophyllum albicans, its only New England station, although abun- 
dant in the island. The others were Calypogeia fissa and Scapanta 
paludosa.! 
The writer has had four seasons’ investigation there, and has brought 
the list up to 97, including five more new to Maine, one, Lejeunea 
patens, being likewise new at that time to New England. The others 
were Lunularia cruciata, Calypogeia sphagnicola, C. Sullivantii, and 
Radula obconica.’ 
Of the many more species presumably resident upon the island, 
the majority are to be sought within the western part, as that has 
been less thoroughly explored. 
The writer wishes to thank Mr. Rand, who kindly let her take the 
hepatic collection home for leisurely study. Miss Shaw and Prof. W. 
R. Taylor have also contributed specimens. Further material will 
be most gratefully received from anyone visiting the island. 
1 Ruopona, vol, 23, p. 284, Dec. 1921. 
! Ruopora, vol. 25, p. 97, June 1923. 
3 RHODORA, vol. 21, p. 169, Sept. 1919; vol. 23, p. 284, Dec. 1921. 
