66 JOURNAL OF THE 



The perithecia were only found ou the twigs, imbedded in the 

 dense felt of mycelium. 



UNCINULA L£v. 



Perithecium containing several asei ; appendages coilect or 

 incurved at the tips, free from the mycelium. 



U. SPIRALIS B. & C. 



*Syn. U. spiralis B. 6c C. Berkeley, Introduction to Crypto- 

 gamic Botany, 1857, p. 278, Fig. 64. 



U. Ampelopsidis Peck, Tran*. Albany Inst., Vol. YII, p. 

 216, 1872. 



U. Americana Howe, Journal Bot., 1872. 



U. subfusca B. & C. Grev. IV, p. 160, 1876. 



Epiphyllous; mycelium thin, evanescent. Perithecia numer- 

 ous, scattered, black, 70-100. Appendages twenty-five to thiity, 

 three to four times the diameter of the perithecium, colored, 

 faintly septate, tips loosely coiled. Asci five to eight, 30-40 x 

 50-65, ovate, pedicellate. Spores four to six, small. 



On cultivated grape, autumn. Auburn, Ala., 1889, 1030. It 

 appears to come too late to do harm, so far as I have observed 

 here for two years. 



U. MACROSPORA Peek. 



Amphigenous, mostly epiphyllous; mycelium thin, persistent. 

 Perithecia numerous, scattered, 100-1 20, globose biconvex, reticu- 

 lations evident, but not very distinct, small. Appendages 

 thirty to fifty, about equal to diameter of perithecium, radiating, 

 or ascending to erect from crown of upper side. Asci five to 

 ten, ovate or elliptical, pedicellate 25-30 x 60-65. Spores two 

 to three, large, oval, 25-30. 



On Ulmus Americana, Columbia, S. C, October 28, 1888, 

 622; Ulmus, Auburn, Ala., August 6, 1890, 1788. 



U. FLEXUOSA Peck. 



Hypophy lions; mycelium thin, evanescent. Perithecia scat- 



*Prof. B. T. Gal!o\vay, who has recently made cultures of this species to determine the 

 different hosts, kindly furnished me with the synonymy of this species. 



