310 BOTANICAL GAZETTE [OCTOBER 
enhancing the practical value of the publication.—J. N. Rose (ibid. 259-302) has 
published the sixth paper in his “Studies of Mexican and Central American 
plants.” About 75 species are described as new, and several transfers have been 
made. Three new genera (Pelozia, Pseudolopezia, and Jehlia) of the Onagraceae 
are briefly characterized. The text is supplemented by numerous illustrations.— 
P. C. STANDLEY (2bid. 303-389. pls. 28-43) publishes an interesting systematic * 
treatment of the Allioniaceae, dealing chiefly with those of the United States. 
The author recognizes 16 genera, describes about 50 species and some 20 so-called 
sub-species as new to science; three of the genera enumerated are new, namely 
_ Anulocaulis, Commicarpus, and Hesperonia. Through an apparent oversight 
the genus Commicarpus either has been omitted from the key to the genera or 
confused with Senkenbergia.—N. L. Brirron and J. N. Rose (ibid. 391, 392. 
pls. 44, 45) propose a new genus (Thompsonella) of the Crassulaceae; the genus is 
represented by two Mexican species. The type of the genus is Echeveria minuti- 
flora Rose.—J. N. Rose (ibid. 393-409. pls. 46-59) describes 10 new species of 
flowering plants chiefly from Mexico and the southwest, including also a new 
genus (Conzatlia) of the Leguminosae, and makes critical notes on species 
previously published.—N. L. Brirron and J. N. Rose (ibid. 413-437. pls. 61-76); 
in an article entitled ‘The genus Cereus and its allies in North America,’’ have 
recorded 24 genera, of which 15 are designated as new. Of the 131 species 
enumerated 12 are described as new, 77 form new combinations, and 19 are of 
doubtful generic relationship. The new genera proposed are as follows: A cantho- 
cereus, Bergerocactus, Heliocereus, Hylocereus, Lemaireocereus, Leptocereus, 
Lophocereus, Nyctocereus, Pachycereus, Peniocereus, Rathbunia, Selenicereus, 
Weberocereus, Werckleocereus, and Wilcoxia.—J. N. Rose (ibid. 439, 44° 
pls. 77-81) describes and illustrates 5 new species of Crassulaceae from Mexico.— 
J. M. Coutrerand J. N. Rose (ibid. 441-451. pls. 82, 83) have issued a “Supple- 
ment to the monograph of the North American Umbelliferae” in which the authors 
include descriptions of 6 new species; two new genera are also proposed, namely, 
Ligusticella and Orumbella.—W. R. Maxon (ibid. 411. pl. 60) describes and 
illustrates a new species of Asplenium from China; and (ibid. 13: 1-43. pls. 1-9- 
1909) in continuation of a series of articles begun in an earlier volume of this 
‘journal has published results of further studies of tropical American ferns. In 
this paper, the second of the series, the author describes 16 species of ferns and 
2 species of Lycopodium from Mexico and Central America, and also presents 
a “Revision of the West Indian species of Polystichum”’ in which 19 species are 
recognized, 4 being hitherto undescribed.—J. M. GREENMAN. 
A garden book.—A lover of flowers will find pleasure and inspiration in 4 
charming book entitled A little Maryland garden by Heten Asué Havys.° She 
writes in a most interesting and pleasantly intimate way of her experienc 
starting a flower garden, of her successes and failures, and of the great satisfaction 
8. 
es in 
6 Hays, HELEN AsHE, A little Maryland garden. 12 mo. pp.——: PM 
New York: G. P. Putnam’s Sons. 1909. $1. 
