1910] CURRENT LITERATURE 69 
Monograph of the Elaeagnaceae.—This elaborate paper by SERVETTAz extends 
. through 420 pages, and is a remarkable attempt by a single student to investi- 
gate every phase of a whole family. Naturally it is encyclopedic, and therefore 
cannot be reviewed in any real sense, but its general contents may be indicated. 
The first part'? is concerned exclusively with the taxonomy of the family. The 
author recognizes two tribes and three well-marked genera:. Hippophaé, Shep- 
herdia, and Elaeagnus. The first genus is represented by a single species and 
three subspecies, the second by three species, and the third by 39 species, numerous 
subspecies and varieties, several of which are new to science. The genus Elaeag- 
nus is divided into two sections, based on the time of flowering and the persistency 
of the leaves, and a very clear key leads to the species under which is given further 
a key to the subspecies and occasionally to the varieties, thus greatly facilitating 
the use of the oop apa sal in the interpretation of the subordinate 
categories. Bi y and synonomy, for the most part, are very fully given, but 
the few citations - Avarcens exsiccatae suggest a paucity of material as well as 
unfamiliarity with the names of American collectors. For instance, on page 21 
we find under Shepherdia canadensis “‘no. 1205 Waghome,” which is doubtless 
intended for WAGHORNE. Again, on the same page is noted ‘‘Charlotte Vermont 
no. 2452 Hall et Harbour;” this citation needs verification; it suggests a record 
made from a misleading label (HALL AND Harpour collected this species in 
Colorado and distributed it under 506). Furthermore, under S. argentea we 
find “Oregon no. 201 3 Cusik,” which is meant for the collection of WittraM C. 
Cusick. These are minor details; nevertheless, they are inaccuracies in citation, 
and such inaccuracies often lead to confusion and are sometimes difficult of 
elimination. The descriptions are well drawn, the keys are clear, and the text 
gures are numerous. On the whole, therefore, the taxonomic part of the 
work represents a comprehensive and commendable study of the group.—J. M. 
GREENMAN, 
The second part'® deals with “anatomy ae biology.” The three genera 
above named are treated separately under each head, so that any anatomical, 
morphological, or “biological” fact belonging to any one of them may be looked 
up as readily as in a card catalogue. 
The chapter titles of this second part are essentially as follows: (1) germina- 
tion and the vegetation of the adult plant, (2) anatomy and development of the 
Toot, (3) anatomy and development of the stem, (4) anatomy and development 
of the leaf, (5) anatomy and development of the flower, fruit, and seed, (6) dis- 
cussion of affinities, (7) summary and conclusions. 
To the morphologist, as distinct from the anatomist, the items of interest 
recorded are the development of abundant sterile tissue capping the solitary 
17 SERVETTAZ, CAMILLE, ee des Eléagnacées. IL. Systematik. Beih. 
Bot. Centralbl. 25:1-128. figs. 1 
*8 SERVETTAZ, Monographie a "Elegance IL Anatomie et Biologie. bid. 
25: 129-420. figs. 140. 1909. 
