134 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Perithecia 4 to 10, globose, .25 to .33 mm. diameter, buried in 

 the unchanged substance of the bark, with convergent necks, 

 terminating in short-cylindrical, obtuse, perforated ostiola erum- 

 pent in a close fascicle perforating and slightly raising the bark. 

 Asci clavate, p. sp. 40 to 45 x 8 to 10 /j., 8-spored, paraphysate? 

 Sporidia allantoid, hyaline, 12 to 15 x 3.5 to 4. 5 //, biseriate 

 above. 



Spermogonia (Cytispora Chionanthi E. & E.) buried in the bark 

 flask-shaped, .5 to .75 >>. diameter, multilocular, the cells soon 

 confluent, the apex erumpent and perforated by a single pore. 

 Sporules allantoid, 4 to 6 x i to 1.25 //, borne on basidia branched 

 above, the branches erect, straight, nucleate, 7 to 10 //. long. 



V. pauperata C. & E. 



On Acer rubrum, March 26, 1894 (Nuttall, 1444, 423). 



V. leucostoma (Pers.) Fr. 



On peach tree, Dec. 2, 1894 (Nuttall, 1768). 



V. Linderae Peck. 



On Benzoin Benzoin, April n, 1895 (Nuttall, 1796). 



EUTYPELLA Nits. 



E. densissima E. & E., Proc. Phila. Acad., 341 (1894). 



TYPE HABITAT: On dead limbs Aralia spinosa, Feb., 1894 (Nutt- 

 all, 363). 



Stromata scattered, cortical, depressed-conical, 2 to 3 mm. 

 diameter, not circumscribed, but staining the bark olive-gray. 

 Perithecia numerous, often 50 to 70 in a stroma, 100 to i2o/jt 

 diameter, closely packed, their slender necks terminating in 

 obtusely conical, 4 cleft, black, densely crowded ostiola erum- 

 pent in a brown disk surrounded by the ruptured epidermis. 

 The disk is soon obliterated, so that only the crowded, black, 

 subshining ostiola are seen. Asci clavate-fusoid, p. sp. 25 to 

 30 x 4 fj.. Sporidia biseriate, allantoid, hyaline, moderately 

 curved. 8 to 10 x 1.5 to 2 /a. 



E. rugiella (C. & E.) Sacc. 



On Acer rubrum, May 4, 1893 (Nuttall, 921). 



E. stellulata (Fr.) Sacc. 



On Robinia Pseudacacia, March 29, 1893 (Nuttall, 33). 



E. Platani Sz. 



On Platanus occidentalis in drift. Spores 7.5 to 8 x 1.5 to 2 //. 

 Oct. 21, 1895 (Nuttall, 1885). 



EUTYPA Tul. 

 E. spinosa (Pers.) Tul. 



On dry dead logs, June 29, 1893 (Nuttall. 1105). 



E. milliaria (Fr.) Sacc. 



On river drift wood, April 20, 1894. Asci 150 x 6 /* spores 

 10 x 2 fj. (Nuttall, 1477). 



