124 A Monograph of the Erysiphaceae 



77. /. 22g-'2j2. 1865 ; Cooke, Handb. Brit. Fung. 2 : 649. 

 1871 ; Sacc. Syll. Fung, i : 13. 1882 ; Wint.; Rabenh. Krypt. 

 FI. Deutschl. i^ : 36. 1884 ; Karst. Act Soc. Faun. Flor. Fenn. 

 2: 91. 1885 ; Schroet.; Cohn's Krypt, Fl. Schles. 3 ; 243. 1893 ; 

 Jacz. Bull. THerb. Boiss. 4 : 746. 1896; Oudem. Rev. Champ. 

 Pays.-Bas. 2 : 92. 1897. 



Calocladia hcrbcridis Lev. Dietr, Blick. Crypt. Ostseeprov. '^'^^^• 

 1S56; Karst Myc. Fenn. 2r 196. 1873. 



PodospJiacra bcrbcridis Lev. ; Quel. Champ. Jur. Vosg. 3 : 106. 



1875. 



Exsicc: Rab.-Wint.-Patzsch. Fung. Eur, 38 5 5 ; Rab. Fung. 



Eur. 555, 2318; Rehm. Ascom. 499; FckL Fung. Rhen. 693; 



de Thum. Fung, austr. 137; Syd. Myc. March. 246; Roumeg. 



Fung. Select. Gall. Exsicc. 159; Oudem. Fung. Neerl. Exsicc. 



153 ; Rab. Herb. Myc. ed. 2, 459; Cooke, Fung. Brit. Exsicc, 



95, ed. sec. 283; de Thiim. Myc. univ. 1838; Kunze. Fung. 



select exsicc. 320; Westend. Herb. Crj^pt. Belg. 738; Desmaz. 



PL Cr. Fr. ed. i, ser. i, 519; Vize. Fung. Brit 93; "^Erikss. 



Fung. par. scand. 143. 



Amphigenous ; mycelium ev^anescent, or sometimes sub-per- 

 sistent in irregular patches, or very thinly effused over the whole 

 surface of the leaf; perithecia usually scattered, occasionally more 

 or less densely gregarious, 90-125 11 in diameter, cells 10-15 /^ 

 wide; appendages 5-20, \%-2.y2 times the diameter of the peri- 

 thecium, colorless, thin-walled above, becoming thick-walled in 

 the lower half when mature, aseptate, smooth, apex regularly 4 

 times dichotomously branched, branching rather close, branches of 

 the last order more or less parallel, never widely spreading, tips of 

 ultimate branches not recurved ; asci 4-9, ovate-oblong, very 

 shortly stalked, 48-56 X 26-32 11 ; spores 3-6, usually 4, 18-22 x 

 9-1 1 //. 



Host, — B, aquifoliitui^ B. vulgaris. 



Distribntion, — Europe : Britain, France, Belgium, Nether- 

 lands, Germany, Switzerland, Italy (307), Austria-Hungary, 

 Servia (318), Norway, Sweden, Finland (192), Russia. 



Asia : — Cyprus, Transcaucasia (338), Turkestan, Japan. 



Somewhat intermediate between NL grossnlariae and M, alni^ 

 van lonkerae. The apex of the appendages is regularly 4 times 

 divided, and the straight ultimate branches do not spread widely, 

 but lie more or less parallel to one another, in this respect some- 



