REVIEW— ZUR MOOSFLORA DES LENA = TALES. ARNELL 
John M. Holzinger 
Zwr Moosflora des Lena-Tales (Contribution to the Moss flora of the Lena 
'Valley), by H. Wilhelm Arnell. With 3 plates. Published in Arkiv foer Bo- 
,, tanik , Band 13, No. 2. (Communicated April 9, 1913.) 
Whether the “communication” stands for the date of publication is not 
certain to the writer of this review: the date of publication of this number of 
the Arkiv is Sept. 8, 1913. This is a report by Professor Arnell on the Hepatics 
and Mosses collected in 1898 in the valley of the Lena River in central Siberia 
which in its lower course flows for several hundred miles within the Arctic Cirde. 
The paper is written in German; the descriptions of new species, in Latin. Herr 
Apotheker C. Jensen determined the Sphagna and made the drawings for the 
three plates. 
For convenience in cross-reference to the author’s previous work, Musci 
A'siae borealis , the same system and nomenclature is used, namely S. O. Lind- 
berg’s, but the author expressly disclaims agreement with Lindberg. In the 
foreword the moss literature of arctic America is briefly reviewed as far as it 
has accumulated up to date. The topography of the valley, as described by 
writers on this subject, appears to be closely paralleled by the upper Mississippi 
valley from St. Paul to central Iowa; each valley is a ll deep furrow ” inco the 
general level of the country, cut thio strata of sand and limestone and shale. 
The eighteen collecting stations enumerated range from 50° to 72 0 north 
latitude. The most intensive collecting was done within the Arctic Circle. In 
all, the author reports 61 Hepaticae, 14 Sphagna , and 241 Musci, a total of 316 
species. The new species here described are: Radula proligera, Aplozia cordi- 
Jolia var. sibirica A. & J., Sphagnum contortum sibiricum Jens., Bryum Ehlei, 
B. obtusidens, B. purpurascens leucocarpum, Tortula mucronifolia emucronata, 
Mollia tortuosa arctica, Pleurozygodon sibiricum, Grimmia Ehlei, Amblystegium 
uncinatum chryseum, A. Ehlei, Hypnum plumosum revolutum, Helicodontium 
rotundifolium, and Sterecdon revolutus plumosus. In addition, them are enumer- 
ated 42 other species new to Siberia, in this collection. 
The species figured in the plates are: Radula proligera Arn., Martinella Sim- 
monsii (Bryhn .et Kaalaas), Plagiochila arctica Bryhn et Kaalaas, Dicranum 
■elongatum Sphagni (Wg.) Th. Jensen, Pleurozygodon sibiricum Arn., Grimmia 
Ehlei Arn., Amblystegium Ehlei Arn., and Helicodontium rotundifolium Arn. 
This brochure, of 94 pages, closes with an alphabetic index of genera and 
.an enumeration of 33 references. 
ANNUAL REPORTS OF THE SULLIVANT MOSS SOCIETY FOR 1913 
Report of the President 
As in previous years the President is able to report progress and a con- 
tinued interest in the work of the Sullivant Moss Society on the part of its mem- 
