CURREY—MYCOLOGICAL NOTES. 200 
which, although too far advanced for very accurate observa- 
tion, did not appear to differ from those of Helminthosporium 
macrocarpum. In fig. 16 b,c, I have drawn the spores of 
the Helminthosporium in question, and in fig. 16 a, the 
fruit of the Sphzeria, which is very handsome. The following 
is the description of the Sphzeria, which, as far as I know, is 
new : 
Spheria obtecta, nu. sp. (Obtecte).— Perithecia round, 
with a short, somewhat flat, sometimes rather gaping ostio- 
lum, solitary, or in small groups, mostly quite concealed by 
the bark. Sporidia biseriate, dark rich brown, oblong, 
usually slightly constricted in the middle, 0:0012 to 0:0015 
inch long. On Wych elm. 
Spheria macrospora, Desm.—Mr. Broome has called my 
attention to the frequent association of this Spheria with 
Coryneum macrosporium, Berk. Ido not know whether the 
fruit of this Spheria has ever been figured. In fig. 19 a, 
I have drawn the sporidia, which are colourless at first, 
and eventually become of an olive-green tinge. They are 
3-partite or 3-septate, and surrounded by a narrow gela- 
tinous envelope. The Sphzeria itself is described in the 
‘ Annales des Sciences,’ series 3, vol. x, p.390; it belongs to 
the Ceespitose. The spores of the Coryneum are drawn in 
fig. 19 6. It seems to me not at all improbable that the 
Spheeria and the Coryneum may be the produce of the same 
mycelium. 
Spheria stercoraria, Sow.—In this species I have ob- 
served a curious process of germination, which seems worthy 
of notice. It consists in the protrusion from one end of 
the sporidia of an oblong or fan-shaped expansion, forming 
a sort of crown at the apex of the sporidium, whilst from the 
other extremity the usual elongated germ-filament proceeded. 
In fig. 17 I have drawn two of the sporidia, which are still 
attached to the fragment of an ascus, and both of which have 
thrown out the crown from one extremity, and the filament 
from the other, the former of which appears to consist of four 
short colourless threads or cells compacted together. The 
sporidia of S. sfercoraria are at first colourless, then of a sort 
of olive-green, and eventually almost black. They germinate 
as actively in the hyaline state as they do after having attained 
the black colour of their full age. Their length is very 
variable, sometimes reaching to 0°0010 of an inch. In the 
figure the remains of the inner membrane of the ascus are 
seen collapsed upon the tips of the sporidia. 
