Davis — Parasitic Fungi in Wisconsin — II. 101 



Puccinia curtipes Howe. On Tiarella cordifolia. Devils 

 Lake. 



Phragmidium disci florum (Tode) James. Uredinia and telia 

 on Rosa acicularis at Ellison Bay are probably PJi. rosae-acicu- 

 laris Liro if one accepts that as a distinct species. 



Melampsoropsis cassandrae (Pk. & CI.) Arth. Aecia (Peri- 

 derminm consimile Arth. & Kern) on Picea canadensis. Wau- 

 saukee. 



Uredinopsis atkinsonii Magn. A collection on Cystopieris 

 bulbifera from the Wisconsin river bluff opposite Bridgeport I 

 have referred to this species. 



Additional Species. 



Not previously reported as occurring in Wisconsin. 



Plasmopara viburni Pk. On Viburnum Opulus americanum. 

 Wausaukee and Athelstanc. Conidia and oospores. Oospores 

 subepidermal, oogonia globose, usque 48/x in diameter, wall often 

 irregularly thickened ; oospores globose, 24-37^ in diameter, wall 

 2-4/t thick, smooth or nearly so. 



Asterina cuprcssina Cke. On Juniperus communis depressa. 

 Fish Creek. 



Ascochyta wisconsina n. sp. ad interim. Spots orbicular to 

 elliptical, gray with a narrow black border and frequently zonate 

 above, brown with a less definite margin below, 1-3 cm. long; 

 pycnidia epiphyllous, scattered, brown, prominent, globose to 

 sublenticular, 85-110/x in diameter ; sporules ovoid to oblong, hy- 

 aline, 4-8 x 2i/>-3 1 / 2 A ( " Some of the longer sporules have a me- 

 dian septum and it is probable that well matured specimens 

 would show this to be an Ascochyta. The affected leaf tissue 

 seems quite friable and apparently fragments and falls away 

 piecemeal. On Sambucus canadensis. Devils Lake. August 

 7, 1913. On examining a specimen of Septoria sambucina Pk. 

 collected at Racine it was found to bear also an Ascochyta with 



