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BRITISH MYCOLOGY. 
By Miss ANNIE LORRAIN SMITH. 
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Mortierella Rostafinskii Bref. Untersuch. IV., p. 81. 
Sporangiophores single, upright, unbranched, non-septate, 
cylindrical, from a swollen base which is enveloped in thread- 
like, septate, rhizoids, sharply constricted beneath the sporangium, 
colourless ; sporangia globose, many-spored with a turned down, 
basal collar ; spores globose-elliptical 6m x 5 smooth, colourless 5 _ 
zygospores globose, I mm. in diameter, with a thick pale yellow, — 
smooth epispore surrounded by an envelope of brown hyphe— 
the carposporium. 
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In this species the zygospore acts as reserve material, the 
sporangiophores grow out from the envelope. © 
On a dead fir stump at Strathpeffer, Ross-shire, Aug., 1896, 
Mr. Jenkin. Journ. Bot., Jan., 1897. 
Mortierella repens A. L. Sm. Journ. Bot., May, 1898. 
Mycelium creeping, widely spread ; sporangiophores rising 
from the mycelium, unbranched, slender, slightly tapering, very 
variable in length ; sporangia globose, varying in size from 20pm 
in diameter without any basal collar; spores few, from five 
upwards, globose, I1p in diameter. 
Collected by Mr. Jenkin on damp earth, Newport, Monmouth, 
Jan., 1897. 
M. Bainieri Cost. var. nov. Fenkint ALL. Sim, 
Sporangiophores about 1 mm. in height, branching in a sym- 
podial manner, tapering from 10m in width towards the base to 
5 below the sporangium, not constricted, and without basal — 
collar; sporangia spherical, about 25u in diameter; spores 
numerous, exceedingly minute, elliptical, 3 x 2, colourless. 


