— 31 — 
sier, Vol. 7, p. 374). Therefore, if this plant should be raised to the generic 
rank, according to the rules of the Paris Code the name must be: Homalo- 
theciella. 
In the paper quoted above, I divided the genus Homalothecium into two 
sections, characterized as follows: 
Euhomalothecium Card. 
Mosses of large size: leaves not or hardly concave, generally deeply 
plicate lengthwise; areolation linear: flowers dioicous; lid conic; H. sericeum 
Br. Eur., H. Philippeanum Br. Eur., etc. 
Homalotheciella Card. 
Mosses of small size; leaves concave, not plicate lengthwise; areolation 
much looser; flowers monoicous ; lidrostrate: H. subcapillatum Sulliv., and 
pe r h aps H. tenerrim u m (C. M.) Jaeg. Charleville, France, Nov. 18, 1903. 
Note. — My idea was not to propose a new generic name for Homalothe- 
cium'subcapi l latum alone but for the whole genus, as Homalothecium is 
untenable. As M. Cardot’s name . is merely a section name it can hardly be 
used in this sense. To avoid further misunderstanding I would propose the 
following binomials in which Burnettia replaces Homalothecium : Burnettia 
sericea (L.), B. Philippeana (Spruce). 
I would also note the error in the Bryologist 6:65, where sub capil latum 
was written for subcapillata (Hedw.). A. J. Grout. 
DIE EUROPAISCHEN LAUBMOOSE, BY G. ROTH* 
Bd. 1. Lief. 1=3. Leipzig. Wilhem Enge! inarm. 1903. 
V. F. Brotherus. 
Since the publication of the Bryologia "Europaea, that monumental work 
upon European Moss Flora, several illustrated works upon the same subject 
have appeared. The Bryologia Europaea is, however, on account of its high 
price less attainable and is at the present time far from complete, and the 
others refer only to more or less extensive portions of Europe. The work we 
have now the pleasure to announce fills up, therefore, a considerable blank in 
bryological literature by giving not only descriptions but very instructive 
illustrations of nearly all the known species. Of the few species which the 
author has up to the present time not succeeded in obtaining, he hopes to 
be able to give in a supplement with the necessary illustrations. 
Mr. Roth’s work, which will comprise two volumes, with one hundred 
and ten plates, will come out in ten or twelve parts quickly following one 
another. In the general part (pp. 1-92) are treated in the most exhaustive 
manner, also taking into consideration the newest literature, the anatomical 
formation of mosses, their manner of increase, extension in a vertical and 
horizontal direction, their relation to the substrata and importance in the 
economy of both nature and mankind, as also a review of the most import- 
ant moss systems. Special interest will be taken in the author’s detailed set- 
ting forth of the importance of mosses in nature, a subject which so far as we 
are aware, has not been before treated in bryological literature. 
