1915] 



BURT THELEPHORACEAE OF NORTH AMERICA. IV 649 



Systematic Summary 



1. Exobasidium Vaccinii Fuck. ex. Wor. Naturforsch. Ges. 

 Freiburg Verliandl. 4: 397-416. pi. 1-3. 1867. Plate 21. 



Fusidium Vaccinii Fuck. Bot. Zeit. 19: 251. 1861. — Exo- 

 basidium Andromedae Peck, Buffalo Soc. Nat. Hist. Bui. 

 1: 63. 1873; N. Y. State Mus. Eept. 26: 73. 1874.—^. Azaleae 

 Peck, Buffalo Soc. Nat. Hist. Bui. 1:63. 1873; N. Y. State 

 Mus. Bui. 26: 72. 1874.— J^J. discoideum Ellis, Torr. Bot. Club 

 Bui. 5: 46. 1874.—^. Rhododendri Cramer in Rabenh. Fung. 

 Eur. 1910. 1875.— E. Andromedae Karst. in De Thuemen, 

 Myc. Univ. 1110. 1878; Finland Natur och Folk Bidrag 37: 

 153. 1882.— E. Karstenii Sacc. & Trott. in Sacc. Syll. Fung. 

 21:420. 1912.—^. Cassandrae Peck, N. Y. State Mus. Bui. 

 29: 46. 1874:.— E. Arctostaphyli Harkn. Calif. Acad. Sci. Bui. 

 1: 30. 1884.— J^. Myrtilli (Thuem.) Karst. Finlands Natur och 

 Folk Bidrag 37: 152. 1882.— E. Vaccinii Myrtilli (Fuck.) Juel, 

 Svensk. Bot. Tids. 6:364. 1912.— E. Oxycocci Rostr. Bot. 

 Tidsskr. 14: 243. 1885.—^. Cassiopes Peck, N. Y. State Mus. 

 Kept. 45: 24. 1893.—^. Peckii Halst. Torr. Bot. Club Bui. 20: 

 437. 1893. 



Illustrations: Woronin. loc. cit. — Richards, Bot. Gaz. 21: 

 pi. 6. f. i-50.— Petri, Ann. Myc. 5: 342-346.— Brefeld, Unter- 

 such. Myk. S: pi. 1. f. 17-22.— BnggSiY, Fung. Dis. /. 215, 216.— 

 Shear, U. S. Dept. Agr., Bur. PL Ind. Bui. 110 : pi. 7. f. A-D.— 

 Juel, Svensk. Bot. Tids. 6: 353-372. /. ^-C— Engl. & Prantl, 

 Nat. Pflanzenfam. (I. 1**) : 104. /. ^5.— Other illustrations in 

 many text-books. References to other illustrations in Sacc. 

 Syll. Fung. 19: 694. 



Fructifications hypophyllous or amphigenous, resupinate, 

 effused, scurfy or felty and compact, grayish, consisting of 

 somewhat scattered clusters of basidia or of basidia and fine, 

 suberect, more or less interwoven and branched hyphae which 

 bear conidia and give to the fructification a maximum thick- 

 ness ranging up to 60-70 ii ; basidia with 4 sterigmata usually ; 

 basidiospores colorless, simple or with some 1-septate, 

 10-20x2^5 At, but usually about 12-18 X3-3| ju, becoming 

 3-septate in germinating; conidia simple, 6-9x1-11 M- 



