144 Griffiths : Some Northwestern Erysipjiaceae 



AInus incana vircsccns Watson, Missoula, Mont. 

 Ncgiindo accroidcs Mocncli., Brookings, S. D. 

 Fraximis vhidis Michx., I^rookings, S. D. 

 Cclastrus scaiidois L., Brookings, S. D. 



MiCROSPHAERA SYMPHORICARPI E. C. How 



c 



On SyynpJioricarpos occidcntalis Hook., Taconia Park, S. D. 

 Symphoricarpos racemosus Michx., Missoula, Mont. 



MiCROSPHAERA VACCINII C. & P. 



On Vaccin'mvi Myrtlllus mkrophyllum Hook., Buffalo, Wyo. 



MiCROSPHAERA ALXI (DC.) Wint. 



On Syriuga vulgaris L., Brookings, S. D. 



Euonyvnts atropiDpurcus Jacq., Brookings, S. D. 

 Alniis incana vircsccns \\^atson, Missoula, Mont. 

 Loniccra glanccsccns R}'db., Bear Lodge Mts., Wyo. 



MiCROSPHAERA QUERCiNA (Scliw.) Burrill 

 On Quercus macrocarpa Michx., Little, Mo.; Buttes, W^o. 



MiCROSPHAERA DIFFUSA C. & P. 



On Vicia Americana truncata (Nutt.) Brewer, Snoma, S. D. 

 Vicia linearis (Nutt.) Greene, IBrookings, S. D. 

 Vicia Americana Muhl., Buffalo, Wyo. 

 Glycyrrhiza hpidota Pursh, Little Mo. Buttes, Wyo. 



MiCROSPHAERA Ravenelii Berk. 

 On Lathynis vinosus Muhl., Syh-an Lake, S. D ; Bear Lodge Mts., 



1 

 1 



1 



WVo. 



Uncixula salicis (DC.) Wint. 



On Salix cordata Muhl, Aberdeen, S. D. 

 vS"^//.rsp., Little Mo. Buttes, Wyo. 



Popuhis trcmuloidcs Michx., Sylvan Lake, S. D.; Red Lodge, 

 Mont. 



Popuhis balsamifcra L., Buffalo, Wyo. 



I 



Uncinula macrospora Peck. 

 On Uhnus Americana L., Brookings, S. D. 



Uncixula negator (Schw.) Burrill. 

 On Parthcnocissus qniuqucfolia (L.) Blanch, Brookings, S. D 



CoLUMiuA University, March i, 1S99. 



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