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 p., 8-spored, paraphysate? 

 Sporidia allantoid, hyaline, 12 to 15 .\ 3.5 to 4.5 ;j., biseriate 

 above. 



Spermogonia [Cytispora Chiona7ithi 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 ,a, borne on basidia branched 

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



V. pauperata C. & E. 



On Acer rubruin, March 26, 1894 i^Nuttall, 1444, 423). 



V. leucostoma (Pers.) Fr. 



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



V. Linderse Peck. 



On Benzoin Benzoin, April 11, 1895 {Nuttall, 1796). 



EUTYPELLA Nits. 



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



Type habit.jit: 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 120 //. 

 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 ',).. Sporidia biseriate, allantoid, hyaline, moderately 

 curved, 8 to 10 x 1.5 to 2 p.. 



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



On Acer rubrnm, May 4, 1893 {Nnttall, 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 {Nnttall, 1885). 



EUTYPA Tul. 

 E. spinosa (Pers.) Tul. 



On dry dead logs, June 29, 1893 {Nnttall, 1105). 



E. milliaria (Fr. ) Sacc, 



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

 10 X 2 /A {Nut tall, 1477)- 



