1893. | Notes and News. 79 
THE COLORED PLATE of Opuntia prolifera in the January number of 
Mechan’s Monthly is one of the handsomest that has yet appeared in 
that journal, and is accompanied by an unusually interesting descrip- 
tion of the plant. 
A BACTERIAL DISEASE of beans 1s figured and briefly described by 
Prof. B. D. Halsted in Garden and Forest for December (v. 620). It 
forms blotches upon the pods, and also attacks the leaves. Seed beans 
may be sufficiently affected to prevent their germination. 
Puccinia AGROPYRI, a common American species of rust, has now 
been found in southern Europe by Dr. P. Dietel (Hedwigia, 1892), who 
has also found by culture experiments that it is genetically connected 
with Atcidium Clematidis, also common in America as well as in 
rope. 
R. J. H. SanpBerc, of Minneapolis, invites the co-operation of 
botanists in the establishment of a botanical exchange bureau 
Botanical Division of the Department of Agriculture has decided, af- 
ter consulting the members, to turn over to him the work of the 
Botanical Exchange Club. 
Henri Hua has begun in Journal de Botanique (Nov. I) an enu- 
meration of the Chinese species of Polygonatum, which represent half 
ies. io _Vabbé Delavay and 
MM. Farges, Soulié and Pratt, have brought to light 16 new species, 
making the enumeration for China reach 22. 
D A RECENT MEETING (Nov. 3rd) of the Linnean Society, Mr. C. T. 
ruery exhibited some new examples of apospory in ferns, namely, 
itle “Bulletin de l’Herbier Boissier,” and will be published 
Autti a sy, near Geneva, under the direction of M. Eugene 
Diino Curator of the Boissier Herbarium. It will contain original 
to form yest €tc., upon general systematic botany, and 1s prema 
francs Ht inet a stout octavo volume with plates. The price 1s 
NEW BOTANIC : 
he ar in January 
under the t JOURNAL was announced to appear J 
a 
a 
THe comprt ; ont 
raat ATION of the systematic and alphabetic index of new 
tebe North American phanerogams and pteridophytes pub- 
1892, is now in preparation at the U. S. National Herbarium. 
