122 Wisconsin Academy of Sciences, Arts and Letters. 



instances two ©r even three septa were distinguished. Perhaps identical 

 with some of the numerous described Septoriae or Ascochytae of grasses; 

 but I have been unable to place it. 



123. ASCOCHYTA SALICIFOLIAE, n. sp. 



On leaves of Spiraea salicifolia L. La Crosse, Pammel. 



Spots numerous, rounded, about 1 mm. in diameter, deep flesh colored. 

 Perithecia large, similarly colored. Spores oozing out; hyaline, fusiform, 

 usually a little curved in form of a crescent, 1-septate, with several (3-4) 

 oil drops; 2-3.5X30-50 m- 



Referred at first to Septoria ascochytoides Sacc, but differs in the ab- 

 sence of a darker border to the spots, while the spores are twice as long as 

 in that species, where they are said to measure 18-20x2.5-3 /<. Perhaps,, 

 like the last, more properly a Septoria than an Ascochyta. 



124. Septoria ravenelii Thuem. 



On leaves of Prunus serotina Ehrh. La Crosse, Pammel. 

 This occurs in the Curtis herbarium under the name S. sanguinea Desm. 



125. Septoria noli tangeris Gerard. 



Forming small black spots on cotyledons of Impatiens fulva Nutt. 

 Madison. 



126. Septoria sisymbrii Ellis. 



On leaves of Dentaria Jaciniata Muhl., in spring. Madison. 



127. Septoria alliorum Westd. {S. viride tingens Curtis). 



On leaves of Allium tricoccum Ait, in spring. Madison. 

 With more diftinct spots than the specimens described ia Peck's 23d 

 Report, p. 55. 



128. Septoria RiBisDesmaz. 



On leaves of Ribes cynosbati L. and R. floridum L. Madison; La- 

 Crosse, Pammel. 



129. Septoria violae West. 



On leaves of Viola pithescens Ait. Madison. 



130. Septoria erigerontjs B. & C, in herb. Curtis {S. erigerontis Peck). 



On radical leaves of some Erigeron, in early spring. Madison. 



131. Septoria oenotherae West. 



On leaves of Oenothera biennis L. Madison. 



132. Septoria scrophulariae Peck. 



On leaves of Scrophularia nodosa L. Madison; La Crosse, Pam- 

 mel. 



133. Septoria heterochroa Desmaz. 



On leaves of Malva rotundifolia L. Common, Madison, 

 Also frequently referred to »S'. destruens Desm., by authors. 



