275 
Catalogue of Canadian Plants, Part VI.—Musci. John Macoun. 
(Geol. and Nat. Hist. Survey of Canada. Montreal, 1802. 
295 pp. Octavo. price 25 cents). 
Since 1861 Prof. Macoun has been collecting the material on 
which this catalogue is based, having had the help of Sullivant, 
Austin, James, and, more recently, of N. C. Kindberg, C. Muller 
and Warnstorf in the determinations, 
It includes all the British territory north of our boundary, and 
Greenland, Alaska and the Pribiloff Islands. Nine hundred and 
fifty-three species are listed, and two hundred and thirty-seven 
of these are new or recently described by Kindberg and Muller, 
which, with fifty-three new varieties, bring the average to over 
twenty-five per cent. hitherto unknown. Unfortunately, fifty-eight 
of these are described from barren specimens, and in many cases 
the descriptions are so incomplete that it will be very difficult to 
determine just what value they will have in future study. There 
is no doubt that such a series of specimens as Prof. Macoun has 
collected and distributed in his ‘‘ Canadian Mosses”’ will do much 
toward a better knowledge of that hitherto bryologically undiscov- 
ered country west of Ontario, from which most of the new spe- 
cies come, only forty-seven belonging to the provinces of Ontario, | 
Quebec and Newfoundland. Twenty-five European species, new 
to America, are added, and two substitutions are made—Mnium 
bseudolycopodivides for M. lycopodioides, and Hylocomium Pyrenat- 
cum for H. Oakesti. Of the fifty-three varieties, most of the east- 
€rn ones are of doubtful importance, as they are founded on slight 
characters of very common and variable species. Six genera, not 
hitherto reported from North America, are included—Monogr a 
num with one species, JZ. stenodictyon, Leptodontium with one 
species, Z. Canadense, which on comparison with Austins type 
of Pottia riparia proves to be that species, which, however, is 
undoubtedly a Leptodontium, replacing L. Canadense by L. ripa- 
rium (Aust.). Under Leptobarbula berica, also new to America, 
there is a mistaken citation to L. & J. Mauual, p. 106. It is a 
synonym of Trichostomum tenue, Br. & Sch., not Hedw. Zygo- 
with one species is also added, Z. viridissimus. Merceya 
latifolia and Lescurea imperfecta are both Wester n. Of 
Species retracted, Hylocomium Flemmingii, Austin, suacuauiaeae 
