Pezicula 341 



Peziza rhabarbarina Berk, in Hooker, Engl. FI. 5^: 197. 1836. 

 Lachnella rhabarbarina Fries, Summa Veg. Scand. 365. 1849. 

 Helotium Rubi Spree in Rab. Fungi Eu. 7 17. 1865. 

 Pezicula rhabarbarina TuL; Fuckel, Symb. Myc. 278. 1869. 

 Dermatea rhabarbarina Phill. Brit. Discom. 343. 1887. 

 Dermatea Rubi Rehm in Rab. Krypt.-FI. l^: 258. 1889. 



Apothecia usually occurring singly, at first subglobose, then 

 expanding and becoming shallow cup-shaped, finally discoid, 

 reaching a diameter of 1 mm.; hymenium plane, or convex, with 

 a yellowish-brown, mealy coating; asci clavate, reaching a length 

 of 90-110 II and a diameter of 16-20 n, 8-spored; spores irregu- 

 larly 2-seriate, long-ellipsoid, becoming 1-2-septate, 6-7 X 18- 

 24 n; paraphyses slender, branched, the enlarged ends forming an 

 epithecium and agglutinated together with a yellow matrix. 



On Ruhiis idaeus and other species of Rubus. 



Type locality: Europe. 



Distribution: Maine to West Virginia and Ohio; also in 

 Europe. 



Illustrations: Ann. Sci. Nat. II. 5: pi. 13, f. 5; Boud. Ic. 

 Myc. pi. 560. 



ExsiCCATi: Shear, N. Y. Fungi 95; Reliq. Farlow. 114, 858. 



10. Pezicula Brenckleana Seaver, nom. nov. 



Cenangium Rosae Sacc. Atti Soc. Veneto Sci. Nat. Padova 2^: 160. 1873. 



Not Cenangium Rosae Schw. 1832. 

 Pezicula Rosae Sacc, Michelia 2: 332. 1881. 

 Dermatea Rosae Rehm in Rab. Krypt.-FI. I': 259. 1889. 



Apothecia occurring singly, or several in cespitose groups, at 

 first rounded, opening and becoming shallow cup-shaped, then 

 discoid, at first yellowish, becoming brown, reaching a diameter of 

 .5-1 mm.; hymenium concave, plane, or slightly convex, yellow- 

 ish-brown; asci clavate, reaching a length of 90-120 ^i and a 

 diameter of 16-18 /x, 8-spored; spores irregularly 2-seriate, ellip- 

 soid, 7-9 X 20 24 /x, finally becoming 1-3-septate; paraphyses 

 slender, enlarged above, the tips surrounded with a yellowish 

 matrix. 



On species of Rosa. 



Type locality: Europe. 



Distribution: North Dakota; also in Europe. 



Illustrations: Sacc. Atti Soc. Veneto Sci. Nat. Padova 2^: 

 pi. 16, f. 19-22. 



ExsiCCATi: Brenckle, Fungi Dak. 392. 



