100 The Botanical Gazette. {March, 
Mrs. W. A. KELLERMAN has been writing very pleasantly —_ - 
variations, which she has observed from time to time. se 0 a 
articles have appeared in Science, in the issues for Jan. 29, Feb. 12, 
others. 
THE HERBARIUM of the University of Minnesota contains ree 
42,000 plants, including r5,ooo spermaphytes. | It embraces a of ex: 
siccati by Ellis, Thiimen, Sydow, Roumeguére, Krieger, Rehm, 
_ some others, in the fungi. 
TWENTY-THREE CALIFORNIAN WEED SEEDS are illustrated a a 
scribed by Mr. Hubert P. Dyer in the annual report of the Cali mere 
Experiment Station for 1890, recently issued. The article is par 
graduating thesis. 
A CERTIFIED list of exchanging botanists, classified according © 
their ability and usual practice in the preparation of herbarium nee 
mens, is being compile Mr. J. A. Morton, secretary of the Cana 
botanists’ correspondence association. 
‘THE SOURCE OF INFECTION for wheat rust is discussed by Pr 
HL. Bolley in Agricultural Science for last December. He ere coe 
that the uredospores are the chief generators of the rust, and ae 
wind may carry them very long distances, even hundreds of m1 % oa 
A REvisION of the North American species of Xyris, py art 
Ries, is published in the Bu//etin of the Torrey Botanical pe é . 
Fourteen species are described (one new) and their range and sym 
nymy given. 
a 
P E i 
. + > 1S 
nish fresh rooted specimens of Erythronium mesochoreum KNERR th 
ov | 
postage and packing) with their addresses. ‘The plant usually beg 
thin scum on water containing Spirogyra in a state of dey pres 
researches combined with earlier ones leave little doubt of ee 
ence of a nucleus at least in the more highly organized microbe» 
SINCE THE 7 eee of Kuntze’s Revisio Generum Plan eat 
0 is elaborating the Labiate for Engler an 
agi liche Pflanzenfamilien, has examined the changes proposed 
«tl 
n the generic names of this order. Out of the fifteen suge® 
he considers five well founded.1 
f iq splen 
Pry finds in certain cells of the stem of Euphorbia 00s 
dens ag, egations of proteid which are “ used as a reserve nitfOBt?’ ¢ 
‘Material, answering to starch among carbo-hydrates.” Other yar 
oo and allied plants do not exhibit aggregations ° 
aterial. 
ee 
* Bot. Centralb, xlix. 106, 
* Annals of Botany v. 413. 
toe 
es 
