( 352 ) 



[Fulcra perithecii diametro triplo lon- 

 giora, erecto-fasciculata] *). 



[Fulcra perithecii diametro senies ad 

 decies longiora, cirrhosa]. 



[P. tridactyla], 

 [P. Schlechtendalii], 



1. Podosphaera Oxyacanthae (D.C.) de Bary, Syst. Ue- 

 bers. der Erys. in Hedwigia 1871, p. 68. — Erysiphe 

 clandestina in Tijds. v. Nat. Gescli. en Phys. XII, 273. — 

 Podosphaera clandestina in Prodr. Fl. Bat. n°. 2960. 



In foliis Crataegi monogynae et Oxyacanthae. — Am- 

 sterdam. — Goes. 



2. Podosphaera myrtillina Kunze in Kunze u. Schmidt 

 Mykolog. Hefte II, 111. — Podosphaera tridactyla Oud. 

 in Nederl. Kruidk. Archief, 2, I, 181. 



In foliis Vaccinii Myrtilli. — Beek (in Gelria). 



3. [Podosphaera tridactyla (Wallr.) de Bary, in Hedwigia 

 1871, p. 68. 



In foliis variarum specierum generis Pruni], 



4. [Podosphaera Schlechtendalii Lév. Ann. des Sc. nat. 

 3, XV, 137. 



In foliis Salicis albae et viminalis]. 



SPHAEROTHECA. 



Fulcra coloris expertia. 

 Fulcra fuliginea: 



vage ramosa 



[setiformia, simplicia, copiosa] 



parcissima vel nulla 



S. pannosa. 



S, Castagnei. 



[S. Epilobii]. 



S. detonsa. 



1. Sphaerotheca pannosa (Wallr.). Lév. Ann. des Sc. nat. 

 3, XV, 138. — Erysiphe pannosa in Tijds. v. Nat. Gesch. 



*) Diagnoses parenthcsibus inclusae species spectant intra limites pa- 

 triae nondum observatae, licet plantae quibus aluntur revera ad florara 

 patriae pertineant. 



