46 3 The Botanical Gazette. 
Dr. F. Francesca, of Los Angeles, Cal., has made a small collec: 
tion of the Guadalupe Island plants. The ‘plants of this pare have! 
been seldom collected. Although quite well known through c 
tions of Dr. Palmer and Professor Greene, so many of the peel ai 
endemic, that almost any collection from the island is valuable. 
F ranceschi has several sets to dispose of ers solicits correspondence 
THE QUESTION of the existence of a special membrane around t 
vacuole has been incidentally studied by Bokorny, who finds,‘ on 
sis occurs but the general protoplasm is slowly killed. 
wall however remains living ex a long time as spol by its reachousy 
A PROSPECTUS see a distribution of Uredinee Americana Exsitea 
by Prof. M. sok Carleton, has been issu ay The fa scicles are to CO 
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the mi iddle of Jan 
THE PROCEEDINGS Pt the sixth annual convention of the Ass 
ae foisens “ioe po secon’ (1892), recently distributed as Bulleti 
2 ee U. S. ey tions, contains five bo oe pa 
ones; hele of fruit decays, aa B. D. Halsted; Notes on re: bre 
ing of fruits, by N. E. Hansen; and Cross sing of cucurbits 
ammel. The report of the section on botany gives ‘ane resume 
ten papers that were presented. 
Mr. G. J. Peirce E publishes in the Annals of Botany for Septem” 
the results of i investigations on the haustoria of the Cuscutas and 80 
other phanerogamic parasites. The author finds the haustoria t 
true lateral roots modified for their special work. In all the fi 
era studied, except the chlorophyll- -bearing Viscum album, the 
ustorium was provided with an axial bicollateral bundle wi 
strands of ducts and two of sieve tubes e haustorium phir 
site always penetrates to the fibro-vascular rin € 
of th 
xylem and sieve tubes are in direct contUnTeatiCnt with h the. 
responding parts of the host. The finding os sieve tubes in the # 
*Biolog. Cent. 13: 271. 1893. 
