30 MR. BEPvKELEY ON THE POTATO MUERAIX. 



itself in the outset as regards the name. The mould has been 

 severally named by Monsieur Desmazieres, Dr. Montague, and 

 Mile. Libert. There is no question, I think, as regards the first ; 

 but Dr. Morren, in a paper published in the Transactions of the 

 Royal Society of Gand,* claims the priority for Mile. Libert. 

 Unfortunately lie does not state in what work that excellent my- 

 cologist had characterised the species previously to the public 

 notice made by Dr. Montague before the Societe Philomathique 

 of Paris, on the 30tht of August. The very reason which in- 

 duced iiim so to do, was that in Dr. Morren 's Memoir, in the 

 Belgian Independance of the 18th of August, no specific name 

 was assigned. It appears indeed from 3L Duchartre's Memoir,t 

 that IVlile. Libert was the first to publish the opinion of Dr. 

 Van Oye, in L'Organe de Flandres ; but whether the species 

 is there characterised or not I am unable to say. But even sup- 

 posing such to be the case, it can scarcely be deemed a publication 

 within the meaning of the botanical canons, which demand some 

 medium of publication generally accessible, which a political 

 journal not likely to be preserved in public libraries can scarcely 

 be accounted. I feel therefore upon the whole bound to adopt 

 the name assigned by the great French cryptogamist. The fol- 

 lowing characters were transmitted to me by him, togetlier with 

 copious sketches of this and other species which I liave availed 

 myself of in the figures. It was his intention to have published 

 them himself, but at my request he gave up the intention, placing 

 his materials in my hands — a mark of kindness and liberality which 

 demands public thanks, though only one amongst a multitude of 

 similar instances. 



The species is characterised as follows : — 



Botrj'tis infistfi/is, Mont, coespitibus laxis erectis albis apice plus minus ramosis ; ramis 

 passim nodosis erecto-patentibus, sporis lateralibus terminalibusque solitariis ovoideo-eUip- 

 ticis proratione ma^rnis concoloribus subapiculatis, nucleo granuloso. Mont. L'Institut, l«4.j, 

 p. 3ia.— Botrytis lallax, Uesra. MS.-!. — Botrytis devastatrix, Lib. — Morren, in Ann. delaSoc. 

 de I'Ag. , &c., de Gand, IK4o, p. 287, cum Icone. 



Hab, in patina inferiori foliorum Solani tuberosi necnon in tuberculis ipsis ag^jeratis. 



Mapul.-E alb;e farinosne parum densae aut conCertii! in parte Iblii inferiori observantur. 

 Flocci steriles inter meatus intercellulares repentes, fertiles, qui e stomatibus emittuntur, 

 inter pilos folii sparsi erecti subtus simplices i lineam in tuberculis attingentes superantesque, 

 saepius vero praesertim ad folia 2 lineam raetientes, apice ramosi septati albi. Kami 2 ad C 

 erecto-patentes acuti virgati passim elliptico-subincrassati liinc nodosi. Sporae pro ratione 

 planbe maximae primo globulosae ovoide.'E tandem ellipticae et turn serainibus Feponis non ab- 

 similes, altero fine ad 3i«;ciem mammillatae subapiculaUe, altero vero brevissime pedicellatae, 

 pellucidae floccis concolores, nempe niveae, intus sporulis endosporio inclusis farctoe. Long, 

 spor. .jji_milUm., crassit. ,2 millim. 



* Ann. de la Soc. Roy. d' Agriculture et de Botanique de Gand, 1844, p. 

 290. 



f Dr. Montague had several days previously communicated it to me with 

 a complete analysis, under the same name. 



X Rev. Bot. 1845, p. 1.51. 



