DU DÉVELOPPEMENT DES CHAMPIGNONS PARASITES. 113 



inœqualitcr6-7-S-icsdieliolomi. Rami ordinum supcriorumsquar- 

 rosi rigidi, ullimi breviter subulati aeuti rccii. Gonidia eliipsoi- 

 dea, apico obtusissimo, basi obtusa v. aeutiuseula, membrana 

 dilate sordideque violacea. 



Oosporarum parvarum episporium pallide luteo-fuscum, cristis tenui- 

 bus acutis connexis regulariler laxe et grosse reticulatum. (Tab. XTIf, 

 fig. 10.) 



Hab. in Papilionaceis Vicieis : In Vicia saliva et Piso salivo delexit 

 Berkeley; ipse legi in Vicia sativa, rarissime tamen oosporas ferenlem, 

 in Vie. sepium oosporis destitutam, in Orobo tuberoso et Ervo telra- 

 spefmo frequenles, et utroque fructu plerumque prseditam. Oosporarum 

 reticulum in Ervo magis elevatum et conspicuum esse solet quam in 

 Orobo et Vicia. 



ï"2. P. Àlsinearum Caspary (1. c). P. conferta Unger, Bot. 

 Zeit., I. c. ex parte. Peron. Lepigoni FuekeL Fung. rhen. P. to- 

 mentosa Fuckel. , ibid. P. Scleranthi Rabenh. , Ilerb. myc. , edit. 1 , 

 n° 1471. Protomyces Stellariœ Fuckel, Enum. Fung. Nass. 



Exs. Rabenh. , Ilerb. myc. , éd. 1, n os 1878, 1 47 1 . Fung. europ. y 

 377, 378. Fuckel, Fung. rhen., n os 15, 20, 21,24. Stipif.es coni- 

 dïophori validi, sequaliter, raro insequaliter 4-5-8-ies dichotomi ; 

 rami patentes, ultimi subulati elongati plerumque arcuati. (Stipites 

 conidiophori raro sub apice 4-5-ies dichotomo ramum distincte 

 lateralem aut duos oppositos pluries dichotomos gerunt.) Conidia 

 ellipsoidea utrinque obtusissima, membrana plus minus sordide 

 violacea. 



Oosporarum episporium lœte fuscuin, cristis validis crassis 

 numerosis connexis subregulariler reticulatum. (Tab. nostr. VIII, 

 iig,9-18.) 



In Stellaria média vulgalissima, totam planlam occupans, vere praacipue 

 oosporas ferens; neque raro invenitur in Ceraslio glomerato et triviali; 

 in Spergula Morrissonii Berolini legit A. Braun (?), in Arenaria ser~ 

 pyllifolia et Lepigono rubro invenitur; Peronospora quae Sclcranthnm 

 annuum oecupare solet etiam bue pertinere videtur. 



Specimina in Stellaria, Cerasliû^ Spergula crescentia sa3pe oosporas 

 4 e série. Bot, T. XX (Cahier n° 2.1 ; 8 



