SPH^EONEMEI. 423 



apiculate at eitlier end, hyaline, binucleate. — BerTc. HooJc. Journ. 

 1853,;?. 40, t. 3,/. 6. Ann. N.H. no. 740. 



On pine planks. Dec. 



Perithecia elongated, black, minute, following the direction of the fibres, at 

 first scattered, at length often confluent. Spores "0003 in. ("0076 m.m.) long, 

 shortly fusiform, apiculate at either end, variable in size, and in the degree 

 of acumination, hyaline, containing two sporules ; seated on slender sporo- 

 phores.— J/. /. B. 



Gen. 105. LEPTOTHYRIUM, Kunze. 



Perithecium flat, irregular, at length breaking off at the base ; 

 spores cylindrical, oblong, or irregular. — Berk. Outl.p. 314. 



The species in this genus are also doubtfully autonomous. 



1233. Leptothyrium juglandis. Lih. " Walnut Leptothyrium." 



Hypophyllous. Spots orbicular, greyish ; perithecia flattened, 

 minute, rugose, brown ; nucleus grey ; spores ellipsoid. — Lib. 

 exs. no. 164. B. ^ Br. Ann. N.H. no. 402. Cooke exs. no. 152. 

 Fckl. exs. no. 201. Cooke^ L. F. no. 60. 



On half dead walnut leaves. Autumn. 



1234. Leptothyrium. fragariae. Lih. " Strawberry Lepto- 



thyrium," 



Epiphyllous. Spots indeterminate, reddish ; perithecia flat- 

 tened, rugose, shining, black; nucleus grey; spores cylindrical 

 with 4-5 sporules. — Lih. exs. no. 162. Cooke exs. no. 153. Cooke , 

 L.F.no.62. 



On strawberry and Potentillce. 



1235. Leptothyrium xibis. Lih. " Currant Leptothyrium." 



Epiphyllous. Spots orbicular, minute, confluent, brown ; 

 perithecia flattened, red-brown; nucleus white; spores ovate, 

 curved. — Lih. exs. no. 258. Cooke exs. no. 151. Cooke, L. F. no. 61. 



On leaves of red currant. Autumn, 



Gen. 106. ACTINOTHYRIUM, Kunze. 



Perithecia orbicular, 

 radiato-fibrous ; spores 

 fusifoiTQ, slender, sim- 

 ple — Berk.Outl.p. 315. 

 Eng.Fl.Y.p.I'd^. 

 (Fig.\h\) 



Fig. 151. 



