465 



The spermogonial stromata are outwardly like the ascigerous 

 stromata, but radiate-cellular within. Spermatia minute. The spo- 

 ridia are smaller than in V. cenisia. 



The specimen in Rav. P. Am. is entirely sterile, even the spermo- 

 gonia being without fruit, but the specc. in the other Exsiccati quoted, 

 agree with this in outward appearance, and the sporidia are as stated 

 in Cooke's diagnosis of V. juniperiua, only there are no " elongated 

 cylindrical ostiola," unless the necks of the perithecia inclosed in the 

 stroma are reckoned as ostiola. 



V. gosstpina, Cke. Valsei of the U. S., No. 115. 



Perithecia quarternate-circinate, covered, disk erumpent. Ostiola 

 not sulcate. Asci 8-spored. Sporidia allantoid, minute, hyaline, 5-6 fi 

 long. 



On branches of Gossypium, So. Carolina, 



Has the habit of V. quaternata. 



V. floriformis, E. & E. Proc. Acad. Nat. Sci. Phil. July, 1890, p. 

 222. (Plate 33) 



Stroma conic-hemispherical, about 2 mm. broad and 1^ mm. high, 

 seated on the inner bark, and covered by the epidermis, which is either 

 pierced or sublaciniately ruptured by the thick fascicle of cylindrical 

 (1 mm. or more long), somewhat spreading, rather obtusely pointed 

 ostiola swollen just below the tip, and erumpent through a yellowish 

 disk which is soon obliterated. Perithecia numerous (25-50), packed 

 in a single layer in the lower part of the stroma, 1 x | mm. diam., ovate 

 or irreo-ular from compression, contracted above into slender necks 

 which rise through the cinereous contents of the stroma, and terminate 

 above in the cylindrical ostiola. Asci (p. sp.) 35-40 x 5 //. Sporidia 

 biseriate, cylindrical, hyaline, slightly curved, 6-7 x 1| ^, 8 in an ascus. 



On dead limbs of Populus monilifera, Missouri (Demetrio). 



Differs from V. verrucula, Nits., in its long ostiola and smaller 

 asci and sporidia. Has much the same general appearance as V. sco- 

 paria, Schw., but ostiola not sulcate and asci and sporidia larger. 



V. delicatula, C. & E. Grev. VI, p. 10. 



y^ l^alsa decidua, C. & E. Grev. VI, p. ii, PI. 95, fig- n- 



Exsicc EU. N. A. F. 865. 



Pustules small (1 mm.) prominent, orbicular or elongated, cov- 

 ered bv the bark, except the minute ostiola, which are clustered in a 

 brown "disk. Perithecia shaped like a Florence flask, membranaceous, 

 the neck equal in length to the perithecium or a little more or less, 

 slender, swollen at the apex. Sporidia sausage-shaped, 6-8 xl| ji. 

 moderately curved. Asci clavate. 

 59 



