17 
** Ceuthospora Lauri,” as he called them, is very common, but 
Cytospora Lauri is rare in Britain 
Distrib. Belgium, Austria, Italy. 
Ms ames Fekl. Enum. F. Nass. no. 487; Symb. Mye. 
; Nachtr. i. p. 27. Tul. Sel. Fung. Carp. ii. 196. Sacc. 
Pa iii. 276. Allesch. vi. 593. 
Stromata on a rounded base, conical, obtuse, ene: slightly 
locellate within, with a distinct conceptacle; disc ound, pro- 
truding, cinereous-white, with a black central aol Spores 
5-6 X 1p, issuing in long slender deep-red or purplish tendrils ; 
spore-mass tinged with purplish-red under the microscope; 
Sporophores acicular or slightly cubulate, fasciculate at the 
base, granular-guttulate, up to 20 x 
On dead leaves and on Siete ' Prunus Laurocerasus. 
The eset Se of Valsa Laurocerasi 
n the leaves does not differ from that on the 
branches, aiiaaa that the former is never accompanied by the 
ascophorous state, as is the latter. This species has been much 
confused with C. Prunorum Syd. and with C. cincta Sace., both 
of which have longer spores, and belong to different species of 
the Valsei. It must also be remembered that it is quite different 
from Ceuthospora Laurocerasi Grove, which has pyenidia of a 
very diverse nature, and no tinge of purple in its spore-mass. 
Distrib. France, Germany, Italy, Austria. 
C. leucosperma Fr. Syst. Myc. ii. 548. Cooke, Handb. pp. 462, 
326. Sacc. Syll. iii. 268. Allesch. vi. 567. Died. p. 333. 
Naemospora leucosperma Pers. Syn. p. 108. 
Stromata small, widely scattered, 500-750 » diam., black, 
raising the epidermis convexly, and at length piercing it by 
_ the round flat whitish disc marked with a black ostiole; loculi 
several, united in the centre, often confluent in a lobed mass; 
walls rather thick, prey green, A ip nl no con- 
ceptacle. Spores 4:5-5-5 x 1:25-1-5 yw, issuing in white 
tendrils ; sporophores filiform, often simple, 15-16 x 1 yp. 
Considered common; summer and nie 
This species is recorded abroad on Carpinus, Cpltens: Fagus, 
Ilex, etc.; but not always correctly, for it differs from its allies 
in hardly anything but the white tendrils, which show little or no 
tendency to become yellowish at first. Nevertheless, as is 
explained below, it is possibly riven! a state of C. ambiens.  ~ 
Distrib. Europe, North America 
C. leucostoma Sacc. Syll. iii. 254. Allesch. vi. 592. Died. 
p. 356. Sphaeria leucostoma Pers. Syn. p.39. C. nivea “ Fekl.”, 
Cooke, Handb. p. 822. C. rubescens Fr. p.p. 
2 19306 B 
