SPH^EIACEl. 805 



2413. Dothidea betulina. Fr. " Birch-leaf Dothidea." 



Epiphyllous, angular, but irregular, tuberculated, shining 

 black, black within ; cells white ; sporidia oblong ovate, obtuse, 

 straight, uuiseptate, very pale yellow. — Fr. S.2I. ii. p. 554. 

 Fries exs. no. 144. Grev. t. 200, /. 2. Fchl. exs. no. 1015. Xyloma, 

 D.C. Mem. Mus. t. 3, /. 1. Moug. exs. no. 370. Wahl. Fl. Lap. t. 

 30,/. 3. Phyllachora betulina, Fckl. Sym. Mi/c. p. 217, 

 On Hying bircli leaves. 



2414. Dothidea heraclei. Fr. " Hog-weed Dothidea." 



Spermogonia. — According to some authors=>S'^7?^c>r/a heraclei. 

 Lib. exs. no. 51. Fcl'l. exs. no. 515. (See no. 1298, ante.) 



AscoPHORE. — Amphigenous, confluent, angular, rugoso-tuber- 

 culate, opaque, black, within blackish ; cells white ; sporidia ? — 

 Fr. S.M.ii.p.6D6. Fng. Fl.y.p. 287. Fckl.exs.no. 722. Phyl- 

 lachora heraclei, Fckl. Sym. Myc.p. 219. 



On living leaves of Heracleum s])ondylium. 



2415. Dothidea podagzarise. Fr. " Gout- weed Dothidea." 



Spermogonia. — According to some authors=>S'6/>^ona p)oda- 

 grarice, Lasch. Fckl. exs. no. 514. Sept. cegopodii, Desm. exs. no. 

 616. Cooke exs. no. 146. (See no. 1302 ante.) 



AscoPHORE. — Hypophyllous, simple, or connate, irregular, 

 rather shining, black, papillate, seated on an indeterminate black 

 crust ; sporidia? — Fr. S.M. ii. p)- ^^^- Fries exs. no. 192. Fckl. 

 exs. no. 1024. Phyllachora uEgopodii, Fckl. Sym. Myc.p. 218. 



On living leaves of ^gopodium podagraria. 



2416. Dothidea trifolii. Fr. " Clover Dothidea." 



CoNiDiA. — According to some auihois=Polythrincium Trifolii. 

 Kze. (See no. 1743.) 



Spermogonia. — Spemiatia very minute, cylindrical, curved. — 

 Fckl. Sym. Myc. 218. Fckl. exs. no. 1022. 



AscoPHORE. — Covered, subrotund, rather prominent, tuber- 

 culose, rugulose, black ; cells immersed in a pulverulent stroma; 

 sporidia? — i^r. A^.il/.ii.^.435. Eng. Fl. v./>. 257. Baxt.exs. no. 

 84. Phyllachora trifolii, Fckl. Sym. Myc. p. 218. 



On living clover leaves. Common. 



