129 
Beginners and students of mosses who do not recognize gen- 
era at sight will find this a useful guide, while even more ad- 
vanced students will appreciate the ingenuity by which the key 
and its explanation is made to serve as an illustrated glossary. 
The terms used are as simple as accuracy will allow, and the key 
permits the analysis of sterile as well as fruiting specimens. The 
genera of the Hypnez are separated, thus forcing a beginner to 
recognize differences which are as clear as those which separate 
genera of acrocarpous mosses. 3 ong me 
Index to Recent Literature relating to American Botany. 
Allamanda grandiflora. (Garden, xxxix. 192, 193, Pl. 794). 
Anthracnose of Cotton. E. A. Southworth. (Journ. Mycol. vi. 
100-105, Pl. iv. and figs. in text). 
A new species is described and figured in this article, Co/- 
letotrichium Gossypti, which was originally distributed in Ellis’ 
North American Fungi, as Gleosporium carpigenum. 
Anthracnose of the Hollyhock—Additional observations on. E. 
A. Southworth. (Journ. Mycol. vi. 115, 116). 
Reference is made to the apparent fact that this fungus was 
described in 1854 by Braun and Caspary as Stetrochete Mal- 
varum, and the name Collectobrichium Malvarum, (Br. and 
Casp.), must therefore stand for it. The author also notes that 
S. graminicola, (Ces.) Sacc. may be identical with C. Bromz, 
Jennings, an undescribed species on Bromus secalinus. 
Arbor-vite—The Western. (Gard. and For. iv. 109, 110, fig. 
23). 
A description of Thuja gigantea, with illustration of base 
of the trunk and account of the confusion in its nomenclature 
with Lzbocedrus. : 
Aster macrophyllus. (Gard. and For. iv. 88, 89, fig. 18). 
Blackberry Rust—Perennial Mycelium of the Fungus of. F. 
C. Newcombe. (Journ. Mycol. vi. 106, 107, Pl. v, vi). 
Description and representation of Ceoma nitens. 
Black Knot of Plum and Cherry Trees. Byron D. Halstead. 
(Bull. No. 78, N. J. Agric. Enp. Sta., illustrated). 
This is an appeal for the destruction of such trees or parts of 
trees as may have become infested with this fungus ( Plowrightia 
