160 
certain substrata were shown. Growth on various media derived 
from oats was specially vigorous, and an abundant crop of sexual 
organs follows, from which ag develope. An acid medium 
oospores is remarkable and unique amongst fungi. The oogonium 
incept enters the antheridium at or near its base, grows up throug 
it and out at the top, expanding there to form the oogonium proper 
in which the oospore develops. Cytological details are not yet 
available. At the end of the paper other species of the same genus 
are shown to behave in a similar annre and some systematic 
alterations based on this discovery are propos 
Phytophthora erythroseptica is prevalent in at West of Ireland, 
and the losses caused by it are considerable, in some cases heavier 
than those due to P. infestans. They are greatest in crops 
rown continuously on the same land ine taking place from 
the soil) and can be avoided by proper rotation 
A.D.C. 
Salacia Livingstonii. —Under this name Dr. Th. Loesener has 
described a specimen in the Stockholm Herbarium labelled 
“ Livingstone’s S, African Exp, 14-198, Lat. Coll. Dr. J. Kirk.” 
Whilst arranging the African material of Salacia at Kew in accord- 
ance with Loesener’s revision, it was found the description of 
S. Livingstonii fitted the type iaioe? of S. pyriformis, var. 
obtusa, Oliv., which was collected by Kirk on Livingstone’s expe- 
dition, and which had not been seen by oartaa The synonymy 
and distribution of the iat os as follo 
Salacia Livingstonii, Zoes. in Engl. oe alicia vol, xliv. p. 178 
(1910). 8S. pyriformis, var. obtusa, Oliv. Fl. ‘Trop. Afr, vol. i. 
p. 375 (1868 
Portucussr East Arrica. Lower Zambesi : Shupanga, 
Kirk. Shire River: Shamo, Kirk. 
T. A. 8. 
Botanical Magazine for March.—The plants figured are Cytisus 
Dallimorei, Rolfe (t. 8482) ; Magnolia salicifolia, Maxim. (t. 8483) ; 
Aloe Marlothii, Berger (t. 8484); Ruellia oe Stapf 
(t. 8485) ; and Prunus pennsylvanica, Linn. f. (t. 8486). 
'ytisus Dallimorei is a garden hybrid obtained at Kew by 
costing the well-known C. scoparius, Link, var. Andreanus, Hort. 
albus, Linn., the former being the seed-bearer, and it is 
icibarastitg t this exceedingly attractive plant is the first 
artificial hybrid obtained in the genus. Its flowers which are 
ings were raised from = e original cross and in one 
of fats the flowers were yellow. A seedling obtained from the 
yellow-flowered plant has epeata-boloared foward touched with rose, 
