Ureditiales, Melauipsoracefe, Melanipsoreie, Melampsora. 839 



cinctis; aecidiosporis globosis, subglobosis v. ovatis, raro augulosis, 

 deuse miunteque verruculosis 16-23 * 14-18, episporio 2-3 \i cr. ; 

 uredosoris hypophyllis, sparsis v. aggregatis, miuutissiiuis V^^Va 

 mm. diani., pallide flavis; uredosporis globosis, subglobosis v. ra- 

 rius ovatis, laxiuscule echiuulato-verrucosis, 15-19 * Il-IG, episporio 

 circa 2 ij. cr. ; paraphysibus capitatis v. clavatis, 50-70 p, long., 

 apice usque 25 ij. latis, pedicello 5-14 [j. cr., membrana 1-2 |i cr., 

 superne subiude parum crassiore ; teleutosoris epiphyllis, subcuti- 

 cularibus, sparsis v. aggregatis, miuutis, 0,25-0,50 mm. diam,, nitidis, 

 obscure brunneis; teleutosporis irregulariter prismaticis, utrinque 

 rotundatis, pallide brunneis, 25-40 * 7-14, ejnsporio ubique 1 |j, cr. 

 Rab. aecidia in foliis Ribis alpini, aurei, G r o s s u- 

 1 a r i a e , n i g r i , r u b r i , uredo-et teleutosporae in foliis S a- 

 1 i c i s V i m i u a 1 i s, in Germania, Austria, Helvetia, Britannia, 

 Dania, Suecia. 



19. Melampsora occidentalis H. S. Jackson, Phytopathology v. 7., 1917, 2896 

 p. 354. — Pycnidiis et aecidiis ignotis, verisimiliter in L a r i c e : 

 uredosoris praecipue hypophyllis, sparsis, rotuudatis, latiuscubs, 

 0,5-1,5 mm. diam. primum tectis dein pulveraceis, flavo-aurantiacis 



V. pallide flavis, epidermide rupta cinctis ; uredosporis oblongis, 

 ellipsoideis v. piriformibus, 32-48 * 16-29, uno latere leniter depres- 

 sis ; tuuica hyalina v. leniter brunnea, 2-3 i^ cr. v. usque ad 7 (x 

 in parte depressa; parce sed prominenter verrucoso-echinulatis, hinc 

 iude levibus et poris obscurioribus praeditis; paraphysibus nume- 

 rosis intermixtis, capitatis v. clavatis, 42-77 * 16-24, tunica hya- 

 b'na, 2,5-3 [i cr., uuiformi v. apice usque ad 6 [Ji iucrassata; te- 

 leutosoris plerumque hypophyllis, sparsis v. saepius confertis v. 

 circa uredosoros coufluentibus, irreguhiriter rotundatis, parvis, 0,2- 

 0,5 mm. cr,, maturis parura elevatis, subepidermicis, ceraceis, pri- 

 mum pallide ciunamomeo-brunneis dein brunneo-nigrescentibus ; te- 

 leutosporis prismaticis 40-64 * 10-20, tunica cinnamomeo-bruunea, 

 levi, 1-2 \i. cr. apice obscuriori et crassiori, 3-5 |jl et poro apicali 

 distincto donata. 



Rab. m foliis Populi acuminatae Rydb., a n g u s t i f o- 

 liae Jas., balsamiferae L., candicantis Ait,, t r i c h o- 

 carpae Nutt., Americae bor. comphiribus locis. 



20. Melampsora Abietis-canadensis (Fari.) c. A. Ludw. in Phytopath. 2897 

 V (1915) p. 279. — Ita vocaudum Gaeonia Abietls canadensis Farlow, 

 Proc. Amer. Ac. 20,, 1885, p. 323, et huic adscribeiulum Peridermium 

 fructigemim Arthur — Syll. XXI p. 750 — et Caeoma Tsugae Spaul- 



