MiCROSPHAERA 141T 



characteristic apical branching of typical divaricata ; sometimes, 

 however, the branching is slightly more compact. 



This occurrence on a species of Lonicera is extremely interest- 

 ing, as it has been hitherto supposed that the var. divaricata was 

 absolutely confined to Rhauuius Frangtda, and that the only plant 



which occurred on Lonicera in Europe was JZ alni, var. loniccrae. 



Var. vaccinii (Schwein.). 



ErysipJie vaccinii Schwein. Syn. Fung. Am. Bor. 270. 1834 ; 

 Sacc. Syll. Fung. 1:21. 18S2. 



MicrospJiaera vaccinii Schwein. Cooke & Peck Journ. of Bot. 

 11. i: 13. 1872; Peck, Reg. Rep. 23: 65. 1873; Sacc. Syll. 

 Fung. I : 13. 1882 ; Burr & Earle in Bull. 111. State Lab. Nat. 

 Hist. 2 : 417. 1887 ; Atkins. Journ. Elisha Mitch. Sci. Soc. 7 : 70. 

 1 891 ; Burr, in Ell. & Everh. N. Amer. Pyren. 25. 1892. 



M, elevata Burr. ; Bull. 111. State Lab. Nat. Hist, i : 58. 

 pL 2. /. ^. 5. 1876; Sacc. Syll. Fung. I : 770. 1882; Burr S: 

 Earle, Bull. 111. State Lab. Nat. Hist. 2 : 427. 18S7; Sacc. Syll. 

 Fung. 9: 369. 1891 ; Burr.; Ell. & Everh. N. Amer. Pyren. 

 26, 1892. 



Exsicc: Ell. North Amer. Fung. 430 ; Rab.-Wint. Fung. 



Eur. 3539; *Seym. & Earle, Econ. Fung. 145 ; '^'Ell. & Everh. 



Fung. Columb^. 506. 



Epiphyllous, rarely amphigenous ; mycelium persistent, very 

 thin and effused over the upper surface of the leaf, or forming ir- 

 regular patches, sometimes completely evanescent ; perithecia 

 globose or globose-depressed, more or less scattered, very variable 

 in size, 70-145 a in diameter, cells 10-20 /^ wide; appendages 

 4-22, 21^-8 times the diameter of the perithecium, rather delicate 

 and thin (about 5 /^ wide), sometimes slightly angularly bent, 

 flexuose, flaccid, colorless or occasionally amber-brov/n at the base, 

 smooth or sometimes slightly rough towards the base or for most 

 of the length, aseptate thin-walled above, becoming thick-walled 

 below when mature, apex 2-4 times dichotomously branched, 

 branching variable, sometimes very close and compact, sometimes 

 widely forked, with the primary branches long and occasionally 

 recurved, tips of ultimate branches regularly and distinctly re- 

 curved ; asci 2-16, 45-72 x 28-38 fx, ovate or ovate-oblong, with 

 or without a short stalk ; spores 4-6, 18-22 x 10-13 /a 



Hosts. — Andromeda sp., Catalpa bignonioides, C. speciosa, 

 Epigaea repcns, Gaylussacia resinosa, Lyonia panicnlata (371), 



