156 THE CHARACEX OF AMERICA.— SET OF BRITISH RUBI, 
and I. Watii, a Species dedicated to the collector, Dr. Watt, should 
have two ts; it is correctly written in the index. 
Finally, it would have been more useful if more numbers had 
been quoted, especially in the case of the less-known species. 
ow, or have heard, that citation of numbers panders to laziness; 
but all the same, if one has not an authoritative specimen, it does con- 
siderably help out a description, especially if the latter is not very full 
or is provokingly like its neighbours. Ae Bewors. 
The Characee of America. Part li. Fascicle 1. By Dr. T. F. 
Auten. 8vo. New York, [1893] not dated. Price 1 dollar. 
In the second part of this work Dr. Allen proposes to give 
descriptions and illustrations of all the American species. The 
present number includes a part of the Monarthrodactylous section 
of Nitella, eight species being described, of which four are new— 
N. obtusa, N. ntana, N, Blankinshipii, and N. missouriensis, all 
closely allied to \V. opaca. In adddition to eight lithographed 
plates with magnified representations of parts of the various species, 
others are taken from badly preserved specimens. It is to 
regretted that the plates are not numbered so that they can be 
referred to, and that the letterpress is disfigured by a large number 
rs 
of printer’s errors, H. & J. Grovss. 
Set of British Rubi. Fase. 2, Nos. 26-50. Prepared by the Revs. 
E. F. & W. R. Linton, R. P. Murray, and W. Moyze Rogers. 
Tus second fasciculus includes several of the commonest and 
most widely-distributed British forms, which are well known to all 
students of th 
ero. A 
types are dumnoniensis of Babington, Mercicus of Bagnall, pyramidalis 
of Kaltenbach, cognatus of N. KE. Brown, mutabilis of Genevier, 
Lejeunii of Weihe & Nees, and aryentatus and devexiramus of P. J, 
Mueller. British botanists will be very glad to have placed before 
them a specimen of the true carpinifolius of Weihe and Nees, for 
i thei i 
ch 
diversely. The Specimens are carefully selected and well-dried, 
and m ken as a model of what is needed by those who 
collect for the exchange clubs, Along with this set is distributed 
to each subscriber a copy of the Synopsis by the Rev. W. Moyle 
i in this Journal. In thi 
i 
has found its way into the hands of our botanists, It would have 
added materially to the value of the Synopsis if more synonymy 
