MICHIGAN ACADEMY OF SCIENCE. 67 



Pyrenomycetineae. — Continued. 



Pseudovalsa haplocystis (B. & Br.) Sacc. Ann Arbor, Apr. 5, jidc Elli.s. 

 Pseudovalsa profusa (Fr.) DeNot. On Robinia. Ann Arbor, June 5, fide L. N. J. 

 Rosellinia aquila (Fr.) DeNot. On Salix. Ann Arbor, Apr. 4, fide L. N. J. 

 Rosellinia ligniaria (Grev.) Sacc. On chips. Ann Arbor, Apr. 18, fide L. N. J. 

 Rosellinia pulveracea (Ehr.) Fckl. On Rhus. etc. Ann Arbor, Mar. & May, fide 



L. N. J. 

 Rosellinia pulveracea Ehr. var. millegrana. Schw. On barrel staves. Ann Arbor, 



Apr. 17, fide L. N. J. 

 Rosellinia subiculata (Schw.) Sacc. Rotten wood. Ann Arbor, Sept. 24, fide Ellis. 

 Sordaria curvula DeBar. Muskrat dung. Ann Arbor, Feb. 3, fide L. N. J. 

 Sordaria fimicola (Rab.) Ces. & DeNot. var. papyricola. Wint. On paper Ann 



Arbor, Mar. 12, fide L. N. J. 

 Sphaerella impatiensis Pk. & Clint. On Impatiens (leaves) Ann Arbor, July 3, fide 



Spalding. 

 Sphaerella lactucae E. & K. Park Lake. On Lactuca. Sept., fide W. J. Beal. 

 Sphaerella pontederiae Pk. On Nuphar. Ann Arbor, Sept. 18, fide L. N. J. 

 Sphaerella sarracenae (Schw.) Sacc. On Sarracenia. Ann Arbor, June fide L. N. J. 

 Sphaerella zizaniae Schw. On Zizania. Agr. College, fide, W. J. Beal. 

 Sphaeria flabelliformis Schw. On logs. Ann Arbor, May 23, fide Ellis. (This is 



an abortive form of Xylaria according to Ell.) 

 Sphaerotheca castagnii Lev. Agr. College etc. Sept., fide W. J. Beal. 

 Sphaerotheca humuli (D. C.) Lev. On Spiraea etc. Ann Arbor, Oct., fide Spalding. 

 Sphaerotheca mors-uvae (Schw.) B. & C. On Ribes. Ann Arbor, June, fide Spalding. 

 Uncinula circinata C. & P. On Acer. Ann Arbor, fide L. N. J. 

 Uncinula Clintonii Pk. On Tilia. Ann Arbor, etc. Sept. fide L. N. J. 

 Uncinula macrospora Pk. On Ulmus. Agr. College. Aug., fide Wheeler. 

 Uncinula necator (Schw.) Burrill. On Ampelopsis & Vitis. Ann Arbor, Oct., fide 



Spalding. 

 Uncinula salicis (D. C.) Winter. On Salix. Agr. College. Oct., fide Beal. 

 Ustulina vulgaris. Tul. On logs. Ann Arbor, Mar., fide L. N. J. 

 Valsa ambiens (Pers.) Fr. On Larix, Crataegus, Pyrus, & Ulmus. Ann Arbor, Mar. 



& Apr., fide L. N. J. 

 Valsa borella Karst. On Salix. Ann Arbor, April 17, fide Ellis. 

 Valsa cornina Pk. On Cornus. Ann Arbor, Mar. 28, fide C. H. K. 

 Valsa cenisia DeNot. On Juniperus. Ann Arbor, Apr. 8, fide Ellis. 

 Valsa leucostoma (Pers.) Fr. On Prunus. Ann Arbor, May 12, fide L. N. J. 

 Valsa nivea (Hoff) Fr. On Populus. Ann Arbor, April 18, fide L. N. J. 

 Valsaria istiva Ces. & DeNot. On Carya, Vitis, Quercus & Corylus. Ann Arbor, 



Mar. & Apr., fide L. N. J. 

 Xylaria corniformis Fr. Ann Arbor, fide Spalding. 

 Xylaria polymorpha. (Pers.) Grev. Ann Arbor, fide L. N. J. 



Most Pyrenomycetes grow on dead branches, twigs and stalks of the host given; the 

 genera Erysiphe, Microsphaera, Podosphaera, Sphaerotheca, and Uncinula are parasitic 

 on the leaves of living plants. The genus Sphearella (Syn. Mycosphaerella) also grows 

 on leaves, but saprophytically. 



As it is desiralile to complete the list of the fleshy and ascomycetous fungi of Mich, any 

 who are interested in the work are requested to correspond with the writer. 



C. H. K. 



