126 A. »E BARY. 



sel in civitate Massacbusets lecta cl. Caspary bénévole mecuro commu- 

 nicavit. 



Stipitcs conidiferi in foliorura pagina inferiore cavspitessistuntcdndidos 

 densos, maculas ibi praebentes nuraerosassœpe confluentes. Merito sane a 

 cl. Berkeley (1. c.) hase species dislinctissimis et nobilissimis adscribitur, 

 neque tamen caeteris « perfectior » dici potest. 



41. P. violacea Berkeley, Outlines ofbrit. Fungology,\). 3/i9. 

 In petalis Knautiœ arvensis, legit Berkeley. 



42. P. sorclida Berkeley, Ann. and Magaz. of nat. Iiist., 

 3 a séries, vol. VII (1861), p.. 449. 



« Cœspites conidiophori lati, hypophylli, sordide pallidi ; stipiles 

 vage dichotomi, apicibus furcatis inaequalibus. Conidia obovoidea, 

 apice apiculata.» 



In Scrophidariœ foliis. Berk. 



ko. Z\ sparsa Beiïœley, Gardeners Chronide, 1862, p. 308 

 (secund. Regel, Gartenflora, 1863, p. 204, c. icône). 



Stipites conidiophori sparsi, repetite (ad 9-ies in icône) dicho- 

 tomi; conidia ellipsoidea, apice obtusa. 



In foliis Rosœ incerta3 speciei, in frigidario qnodam Londinensi bieme 

 culta3. 



Accedunt 'formée ob linge ro indJcaiœ (Bot. Zeiluncj, 1. c.) in : 



Phyteumate ' betonici folio, Chrysosplenio aliéna folio , Iso- 

 pyro thalictroide. 



Species excludenda. 



P. Pepli Durrieu de Maisonn., Noies sur quelq. plant, de la 

 Gironde. Caspary, i. c. — Specimina a clar. Duriœo ad Caspa- 

 ryum missa et ab hoc mecum communicata Erysiphen quamdam 

 in statu conidifero sistere videniur; ad Peronosporas certe non 

 pertinent. 



