53 



Subfam. II. MELAMPSOREAE. 



X. MELAMPSORA Cast. Pl. Mars. p. 206. 



1. M. populnea (Pkbs.) Karst. 



II. Sori amphigeni, sparsi, laete flavi, rotundati, mi- 

 nuti, pscudosporangio irregulariter rupto et lacerato ac per- 

 sistente Stylosporae obovoideo-ellipsoideo-vel angulato-sphae- 

 roideae, echinatae, longit. 20 — 24 ni mm., crassit. 15 — 18 

 mmm. Paraphyses apice ovoideo-incrassatae, hyalinae. 



III. Sori amphigeni, vulgo congesti, subrotundi aut 

 angulato-confluentes, convexo-plani, primitus luteo-fulvi vel 

 gilvo-rufi, demum nigrescentes. Teleutosporae prismaticae, 

 arctissime coadunatae, 5 — 6-gonae, membrana levi, in ver- 

 tice non incrassata, longit. circiter 55 mmm., crassit. circi- 

 ter 10 mmm. 



Syn. II. TJredo ovata Strauss. in Wett. Ann. p. 92. £/r. 

 populina Auctt. pr. p. 



III. Sclerotium populneum Pers. Syn. Fung. p. 125. Sel. 

 populinum Fr. Sy st. myc. III, p. 262 pr. p. Melampsora Tremii- 

 lae TuL. in Ann. se. nat. 4, tom. II, 1854, p. 95. 



Exsicc. v. Thum. Fung. austr. 38 (II). Karst. Fung. Fenn. 

 290 (III). 



Hab. In foliis Populi (remiäae freqventer vigens. 



* M. populina Tul. in Ann. se. nat. t. II, 1854, p. 95. 



A typo soris uredineis, stylosporis majoribus (longit. 

 30 — 39 mmm., crassit. 13 — 19 mmm.) teleutosporisqve mi- 

 noribus recedens. 



Exsicc. Karst. Fung. Fenn. 984 (II). 



Hab. In foliis Populi pyramidalis in Mustiala. 



2. M. betulina (Fr.) Desm. Crypt. Franc. 1646. 



II. Sori hypophylli, rotundati, gregarii, nitide flavi vel 

 subaurantii, pseudosporangio crasso, ostiolo angusto et qvasi 



