A MONOGRAPH OF THE BRITISH HYPOMYCES. 
47 
Hypomyces viridis. Berk. & Broome. Ann. N. H., No. 1101.* 
„ „ Karsten. Mvc Fenn. n., p. 211. 
„ „ Saccardo. Mich i., p. 286. 
„ ,, Phillips & Plow. Grey, vm., p. 104, t. 130, 
f. 1 ( a-e ). 
Sphseria viridis. Alb. & Schw. Consp., p. 8, t. 6., f. 8. 
„ luteo-virens. Fries Sys. Myc. n., p. 339. 
On various agarics, especially Lactarii. Bay’s Plantation, 
South Wootton, 1878-9-80, C. B. P. 
This is a very marked species, which I have had one opportunity 
of watching through various stages of its development. It 
attacks the fungus (usually as Lactarius) before it appears above 
ground. In this early state, the agaric looks as if it had been 
dipped in the yolk of an egg. So completely were my specimens 
infected, that it was impossible to identify the host beyond being 
an agaric. In a short time the yellow colour darkens and be- 
comes a dirty cinereous green, more or less dark in tint. The 
affected agaric usually increases pari passu with the Hypomyces , 
and does not tend to putrefaction to any abnormal degree. 
Plate 152. 2. a . Portion of Lactarius with the Hypomyces. Nat. size. 
b. Perithecia enlarged. 
c. Perithecium X 140. 
d. Sterile threads of conidia X 400. 
e. Asci and sporidia X 400. 
/. Sporidia X 800. 
10. Hypomyces terrestris, Plow. Boud. Conidia parasitic 
upon agarics, consisting of branched hyaline septate tubes, bear- 
ing at their extremities oval or pyriform conidia, which are filled 
with transparent, granular endochrome ; *025 to *03 mm. long by 
•01 mm. wide. 
Stroma at first a mere web of white arachnoid threads, spreading 
over the ground, which gradually becomes thicker and consolidates 
into Corticium-\ike patches of from 1 to 2 c.m. in diameter, of a 
pale flesh colour. 
Perithecia subglobose, at first immersed in the stroma, then 
nearly half free, reddish in colour ; ‘3 mm. in diameter. Ostiola 
conoid red. 
Asci cylindrical ; *15 to ’2 mm. long by *015 mm. wide. 
Sporidia eight, fusiform, acute, sometimes appendiculated, 
hyaline, uniseriate; # 03 to *04 mm. long by '008 to *01 mm. wide. 
Hypomyces terrestris. Plow, fy Boud. Grevillea vm., p. 
105, pi. 130, f. 2. 
On the ground, beneath or in close proximity to the place in 
which the conidiiferous agaric has decayed. 
North Wootton, 1874-80. Leziate, 1880. 
The conidia, in this county, occur most frequently upon Lactarius 
rufus. During the process of decay thus engendered in the agaric, 
the stroma of the Hypomyces makes its appearance upon the 
ground beneath it, which in due time produces perithecia and 
