114 
surfaces and are only just visible to the naked eye, rarely reaching 
5 mm. in diameter. A microscopic i showed that the pustules 
consisted of masses of gonidia belonging to a fungus agreeing with the 
characters of the genus 3 Hainsea of Saccardo and Ellis. As to whether 
Hainsea is distinct fr om leosporium seems more than doubtful; this, 
ycelium w 
sent in the tissues, and in some instances t e nsea fe red a 
ye 
and its Levin on these organs is due to the extension of myceliu m 
from the lea 
All the lying and dead leaves, along with those portions of the s 
h 
indica ove, were studded with the pale yellow waxy- Soaking, 
agglutinated masses of gonidia belonging to the form-genus Cytispora. 
idia, when mature, exu ough the ruptured epidermis of 
of the walls of the gonidia. These filaments in ae assume various 
irregular masses, no RR on the surface of the leaf for a con- 
le tim 
orm an irregular waxy cake. The clusters are usually produced in 
such close proximity that the whole suftface of the leaf is practically 
covered. The Cytispora is most frequently confined to the upper 
surface of the leaf, but not unfrequently both be are ecvered. 
later stage, like the Tone. the Cytispora extends to the stem 
for a short distance from the insertion of the lee Tn old bleached 
leaves where the Cytispora spore-m been removed i 
d 
EA 
5 
e 
E 
E 
ct 
or 
e 
= 
u 
ater stage the central 
portion of the stroma of the C; ytispora produces perithecia, enclosing 
spores contained in asci, which agree in all essential points with the 
genus Calospora. The m aa of the Hainsea form occurs in 
greatest abundance in the tissues just below the opidermia running 
between the cells and surrounding them with a mesh of hyphæ, but 
not idm their walls. e hyphe are of uniform thickness, measur- 
ing from 3-3:5 » in diameter. At certain points where several h 
cross, lateral branches are given off which become closely entangled and 
evéntually form a small, colourless eushion of o ma which 
destroys the epidermal cells lying immediately above, the cuticle at v 
same time bulging up. From the lower surface of the stroma numerou 
hyphze extend into the leaf between the cells, completely a due 
the tissues. From the upper surface of the stroma, that is, the surface 
lying nearest the cuticle, numerous slender cylindrical aseptate hyphze 
Beim : 
y side; these 
first appearance are slightly clavate at the tips; these thickened apical 
. portions continue to increase in size until er assume an elliptic-ọblong 
_ form, and are then cut off from the gonidiophores a transverse 
i septu im, and escape through t the ruptured cuticle, — the minute 
ica A 
