A Garden Book
enhancing the practical value of the publication.-J. N. ROSE ibidd. 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 (ibid. 303-389. pIs. 28-43) publishes an interesting systematic treatment of the
... of the Allioniaceae, dealing chiefly with those of the United States. The author recognizes i6 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. BRITTON and J. N. ROSE (ibid. 391, 392. pIs. 44, 4z5) propose a new genus (Thompsonella) of the Crassulaceae; the genus is represented by two Mexican species. The type of the genus is Echeveria ninutiflora Rose.-J. N. ROSE (ibid. 393-409. pis. 46-59) describes Io new species of flowering plants chiefly from Mexico and the southwest, including also a new genus (Conzattlia) of the Leguminosae, and makes critical notes on species previously published.-N. L. BRITTON and J. N. ROSE (ibid. 4I3-437. pIs. 6I-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 I31 species enumerated I2 are described as new, 77 form new combinations, and I9 are of doubtful generic relationship. The new genera proposed are as follows: Acantlocereus, Bergerocactus, H elioccrets, Iylocereuts, Lemnireocereus, Leplocereus, Lophocereus, AVyctocereus, Pachycereus, Peniocereuts, Rathbunia, Seienicereits, Weberocereus, TWerckleoccretts, and Wfilcoxia. ---J. N. ROSE (ibid. 439, 440. pis. 77-SI) describes and illustrates 5 new species of Crassulaceae from Mexico.-J. M. COULTER and J. N. ROSE (ibid. 44I-45 I . pIs. 82, 83) have issued a "Supplement 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 Or-umbella.-WT. R. MAXON (ibid. 4II. pI. 6o) describes and illustrates a new species of Asplenium. from China; and (ibid. 13: I-43. pis. 1-9. i909) 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 i6 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 i9 species are recognized, 4 being hitherto undescribed.-J. M. GREENMIAN. A garden book.-A lover of flowers will find pleasure and inspiration in a charming book entitled A little Maryland garden by HELEN ASHE HAYS.6 She writes in a most interesting and pleasantly intimate way of her experiences in starting a flower garden, of her successes and failures, and of the great satisfaction 6 HAYs, HELEN ASHE, A little Maryland garden. 12 mo. pp. . pis. 8.