NEW AND RARE BRITISH FUNGI. 
105 
152. Hypomyces terrestris. Plow. Sf Baud. 
Conidia ( Botrytis agaricina , Link.), parasitic on Agarics, con- 
sisting of hyaline tubes, branching, bearing at the extremity oval 
or pyriform conidia, filled with transparent granular endochrome, 
•025-’03 x *01 mm. 
Ascophore. Stroma fleshy, rather thick, 1-2 cm. in diameter, 
pale flesh-coloured. Perithecia subglobose, immersed, ostiola 
conical, projecting, red. Asci cylindrical, 15-2 x *015 mm. Spo- 
ridia 8, fusiform, acute, sometimes appendiculate, hyaline, uni- 
seriate, *03- , 04x '008- -01 mm. 
I have found this plant for several years, but always without 
perfect fructification, until 1878. The ascophore at first resembles 
some Corticium , growing upon the naked ground, overrunning 
mosses, &c., but always on the spot where an Agaric has recently 
decayed, which has been destroyed by the conidial form. Lactarius 
rufus is the most frequent host, but other A.garics are also attacked 
by it. 
King’s Lynn, 1875-6-7-8. 
M. Boudierhas also met with the same species in France, a speci- 
men of which he was kind enough to communicate. 
Plate 130, fig. 2, a natural size, b, perithecia magnified, c, ascus, 
d, sporidia, e, sporophores, /, con idise, more highly magnified. 
153. Nectria Plowrightiana. Sacc. Mich. p. 307. Plowright Sph. 
Brit., fasc. Hi., No. 154. 
Perithecia gregarious, sub- superficial, soft, sub-globose, red, *5 
mm. diameter, ostiola punctiform, blackish, asci clavate, *09-T 
X ‘02--022, sporidia 8, biseriate, cylindraceo-fusiform, curved, 
•04-’05 x ‘006 mm., 5-7 septate, enucleate, hyaline. 
On dead stems of Arctium lappa , near Shrewsbury. Feb., 
1878. 
154. Nectria ditissima. Tul. Carp. Hi., p. 73, t. 13 .figs. 1-4. 
155 Nectria ribis. Tode. Fung. Meek. H., p. 31, t. 12, /. 103. Plow 
Sp. Brit. fcsc. Hi., No. 11. 
Casspitose, stroma compact, perithecia subglobose, smooth, at 
first purplish-red, then brownish ; ostiola papillate. 
Asci clavati, *09 x *015, sporidia fusiform, hyaline, uniseptate, 
not constricted, *02 x ‘006 mm. 
156. Melanospora chionea. Corda. Icon, i., t. 7, f. 297. = 
Ceratestoma chivnceum. Fr. 8. v. Sc. p. 396. Spliceria chionia. Fr. 
Sys. My co. ii.,p. 446. Fckl. Symbol., p. 126. 
Perithecia scattered, sessile, globose, rugulose, pubescent, white ; 
ostiolum often subulate, acute, yellowish. Asci broadly clavate, 
narrowed below into a stem. Sporidia biseriate, ovate, brownish, 
•012 x ‘008 mm. 
On f alien leaves of pine. 
157. Melanospora vervecina. CBesm.J Spliceria vervecina. Bern, 
Ann. Sc. Nat., 1842 , p. 103, c. in Fckl. Sym., p. 126. 
Perithecia gregarious, minute, globose, depressed, flask-shaped, 
clothed with densely matted white hairs, seated on a brown tomen- 
tose subiculum; ostiolum very long, falcate, glabrous, brown, 
