96 
produce fertile fruit. It is of interest in this connection to recall 
the description of the ‘‘ Row Farm Walnut tree,” (For. Leaves, ii. 
133, 134), which is supposed to be a similar hybrid. 
Labiate.—A Key to the North American Genera of the. Alfred 
C. Stokes. (Bot. Gaz. xvi. 49-52). 
Les Piperacées de l’ Ecuador, de la Nouvelle-Grenade et du 
Pérou, de la collection de M. Ed André, par M. C. De Can- 
dolle (Jour. de Bot. iv. 395-399). 
Thirty-four species of Piper are enumerated in the collection 
of M. André, of which six are new, and of the genus Pzperomia 
there are 45 species, of which ten are described for the first time. 
The actual number of Piperaceze known from Ecuador and New 
Grenada is 139, 93 belonging to the genus Pzfer and 46 to the 
genus Piperomia. 
Loti.—Enumeration of the North American. Edward L. 
Greene. (Pittonia, ii. 133-150). 
After a critical study of the Old World specimens of Lotus 
contained in the eastern herbaria, in connection with a study of 
the types of most of the American species, Prof. Greene con- 
cludes that the plants usually referred to Hosackia, Benth. and 
Syrmatium, Vogel, are generically inseparable from the true Lotz. 
He enumerates 55. species, three of which are described as new. 
Lotus Tree.—Farry’s. Albert Kellogg. (West Am. Sci. vii, 63- 
66, illustrated). 
Contains descriptions of Zizyphus Lotus, Z. vulgaris, Z. 
jujube, Z. xylopyrus, and Z. Parryi—the latter figured. 
Memoirs of the Torrey Botanical Club, Vol, tt. No. 2. (P. 27-56; 
2 plates). 
This number of the Memoirs, issued Dec. 23rd, contains an 
account by Miss Anna Murray Vail of the Spring Flora of South- 
western Virginia, as noted by a party who spent some days in 
exploring that region in May and June, 1890. The paper is an- 
notated by Dr. Britton, who describes the following plants as 
new :— 
Clematis Addisoniz, named in honor of the president of the 
Club (C. ovata, Torr. and Gray, not Pursh), Pentstemon levi-_ 
gatus, var. canescens, and Senecio aureus, var. angustifolius; he 
