FAIRMAX — PYREXOMYCETE.E OF ORLEANS COUNTY. 16^ 



and N. A. Pyr., p. i8. On leaves of some species of Ubrms, Aug. 3, 

 1886. 



208. Uncinula fiexuosa Peck. Peck, Trans, Alb, Inst,, 

 VII, p. 215. Burrill, Par. Fung. Ills., p. 408 and N, A. Pyr., p. 16. 

 On leaves of horse chestnut, yEsculus hippocastanum, Oct., 1885. 



209. Uncinula circinata C. & P. Erysiphei of U. S. in Jour. 

 Bot., 1872. Peck, 25 Rep., p. 96. Burrill, Par. Fung. Ills., p. 408 

 and N. A. Pyr,, p, 17, On leaves of Acer, Oct,, 1886. 



210. Uncinula clintonii Peck. Peck, Trans. Alb. Inst. , VII, 

 p, 216 and 25 Rep., p, 106, Burrill, N, A. Pyr,, p. 15, On leaves 

 of Tilia amcricana, Sept. 26, 1886, 



211. Uncinula salicis (DC) Winter. Burrill, N, A, Pyr,, p, 

 19, Feltgen, Ascom, no. iiir. Uncimda adunca in Pk,, Rep. 23, 

 p. 65. On leaves of Salix sp., Oct, i, 1891. 



PoDOSPH.ERA Kunze 1S23. 



212. Podosphasra oxyacanthae (DC.) DeBary. Burrill, 

 Par. Fung. Ills., p. 413 and N. A. Pyr,, p. 21. In Europe this is 

 often referred to Podosphcvra tridadyla DeBary, e. g. Feltgen, Asc. 

 no. 1092. On leaves of cultivated cherry. 



MiCROSPH.ERA Leveille 1851. 



213. Microsphaera russellii Clinton. 26 Rep. N. Y. State 

 Mus. p. So. Burrill, Par. Fung. Ills., p. 415 and N. A. Pyr., p. 23. 

 On leaves of the yellow wood sorrel, Oxalis, Aug., 18S6. Rare. 



214. Microsphaera alni (DC.) Winter. Burrill, Par. Fung. 

 Ills, p. 421 and N. A. Pyr., p. 27. Feltgen No. 1109. Several forms 

 found which have been referred by botanists to different species. 



(rt). On maple-leaved Viburnum, Aug., 1886. This is what 

 Howe published as Microsphaera viburrii in Torrey Bull., V, p. 43, 

 and is probably the same as Erysiphe viburni Duby. 



((^). On leaves of Fagus americana, Aug. 18S6. Often called 

 Microsphcera peyiicillata Lev. 



(c). On leaves of Syringa vulgaris. This is the form denomi- 

 nated Microsphcera friesii Lev. 



(fl'). On leaves of cultivated Lonicera, July, 1886. This form 

 has been referred to Microsphaera diibyi Lev. In our specimens the 

 appendages are longer than stated in the books. Feltgen refers the 

 mildew which occurs on Lonicera xylosteum in the Grand Duchy of 

 Luxemburg to Microsphccra loniccrce Winter (Feltgen No. 1106), and 



