CURRENT LITERATURE. 
BOOK REVIEWS. 
North American Flora. 
SucH is the title of the most extensive systematic work hitherto undertaken 
in America. It is to contain all plants growing without cultivation in No 
America, which includes Greenland, Central America, Republic of Panama, 
and the West Indies, except Trinidad, Tobago, Curacao, and other islands off 
the northern coast of Venezuela, whose flora is essentially South American. The 
work is published by the New York Botanical Garden, with Professors L. M- 
Unperwoop and N. L. Britron as the committee in charge. The names of 
the advisory committee are ATKINSON, BARNES, CoULTER, CovILLE, GREENE, 
HALstepD, and TRELEASE. 
The plans for such a publication have been under consideration for a number 
of years, and such large cooperation has been secured that there is every assurance 
of a completed work within a reasonable time. The plan includes the publication 
of thirty volumes, each to contain four or five parts; and in this way any part of 
any volume can be published «s soon as it is ready. The volumes are assigned as 
follows: 1. Mycetozoa, Schizophyta, Diatomaceae; 2 to 10, Fungi; 11 to 16, 
Algae; 14 and 15, Bryophyta; 16, Pteridophyta and Gymnospermae; 17 to 19, 
Monocotyledones; 20 to 30, Dicotyledones. 
he first fascicle has been issued recently,: dated May 22, 1905. Its typo- 
graphical appearance gives abundant evidence of the great care that has been 
exercised in the selection of type and the arrangement of material. For example, 
the order with each species is the name and citation, description, ty 
distribution, and illustrations. The contents are as follows: Le 
a description of the order Rosales and a key to its twenty-four families; G. N. 
NasH presents Podostemonaceae, with five genera and ten species; N. L. Britton 
and J. N. Rose contribute the Crassulaceae, occupying the bulk of the fascicle, 
twenty-five genera being recognized (Oliveranthus, Corynephyllum, Cremnophila, — 
and Tetrorum being new) and 284 species (twenty-nine being new); 
Sedastrum, 
. A. RyDBERG presents Penthoraceae, with its single genus and species, and 
Parnassiaceae, the single genus containing thirteen species, four of which are new. 
The New York Botanical Garden and American botanists are to be congratu- 
lated upon the inception of this great work.—J. M. C. 
* North American Flora. Vol. 22. Part r. Rosales, Joun KUNKEL SMALL. 
Podostemonaceae, GEORGE VALENTINE NASH. Crassulaceae, NATHANIEL LORD 
BRITTON, JosEPH NELSON Rose. 
_ 8vo. pp. 80. New York: The New York 
Botanical Garden. 1905. Subscription 
price $1.50 for each part. ; 
74 [yore 
pe locality, 
K. SMALL gives — 
Penthoraceae, Parnassiaceae, PER AXEL RYDBERG: — 
