146 
Index to Recent American Botanical Literature. 
Analytic Key to the Genera of Mosses recognized in the Manual 
of Mosses of North America by Lesquereux and James. 
Charles R. Barnes. (Bull. Purdue Univ. School of Science, 
No. 1, 1886.) 
Prof. Barnes has rendered students of Bryology a valuable 
service in arranging this artificial key. 
Botanical Notes. W.S.Devol. (Fourth Annual Report Ohio 
Agr. Expt. St., 1886, pp. 223-226.) 
Consists mainly of a list of plants identified, principally weeds, 
grasses and forage plants, from all parts of Ohio. 
Cactuses—New Lower Californian. C. R. Orcutt. West 
American Scientist, ii.. pp. 46, 47; one figure.) 
Mr. Orcutt publishes descriptions of a new species of Echino- 
cactus, (E. Orcuttii, Engelm.) having cylindrical heads, 10 to 18 
inches in diameter and 2 to 3% feet high, and deep crimson 
flower 2 inches long; found in Palm Valley, Lower California ; 
and of Cereus pheniceus, var. Pacificus, Engelm, a new form 
from Todos Santos Bay. Both are from manuscript notes by 
Dr. Engelmann. A wood-cut of the Achinocactus is given. 
Catalogue of the Phenogamous and Vascular Cryptogamus Plants 
of Missouri. S.M. Tracy. (Pamphlet, tvo., pp. 106; Jef- 
ferson City, 1886.) 
A neatly printed list of plants hitherto found growing without 
cultivation in the State. 1785 species and varieties are enumera- 
ted, of which 59 are Pteridophyta. 
Celery.— History of. E. Lewis Sturtevant. (Amer. Nat., xx., 
Pp. 599-606 ; three figures.) 
Contagious Diseases of Insects, S.A. Forbes. (Bull. Ill. State 
Lab. Nat. Hist., ii., pp. 257-321; one plate.) 
Bacterial diseases of the European Cabbage Worm—by 
whose ravages the injuries of these pests have received a very 
important check—and of the Yellow-necked Apple Caterpillar and 
the Walnut Caterpillar, very similar to that of the flacherie of the 
Silk-worm, are described. The heliotype plate shows the Micro- 
__ eocct from a diseased Cabbage Worm. The Muscardine, another 
Silk-worm disease, is not bacterial, but is caused by the filaments 
of a hyphomycetous fungus; to this Professor Forbes attributes 
