595 



1). enteroleuca, (Fr.) 



Sphceria enteroleuca, Fr. S. M. II, p. 381, Schw. Syn. N. Am. 1314. 

 Valsa enteroleuca, Cke. Syn. 1971. 



"Conceptacle crustaceous, rough, nearly free, about as large as a. 

 pea. Perithecia minute, stibglobose, numerous, irregularly scattered 

 in the white substance of the stroma. Ostiola rounded, often short- 

 cylindrical, sometimes elongated and tentacular." 



On decorticated branches. Bethlehem, Pa. (Schw.). 



Specc. in Herb. Schw. have the stroma pustuliform-tubercular, 

 erumpent, 1-1 J mm. diam., closely embraced at first by the fibers of 

 the wood, then bare, black (white inside). Perithecia crowded, small, 

 about \ mm. diam. Ostiola only slightly prominent, rather flattened, 

 sulcate. Asci 50 x 12-15 p. (p. sp.). Sporidia allantoid, 5-6 xl //. 



D> prorumpens, (Wallr.) 



Sphceria prorumpens, Wallr. MS. Fr. S. M. II, p. 357, Schw. Syn. N. Am. 1247. 



Perithecia globose, irregularly aggregated, nestling in the bark, 

 with short necks, covered above with a thin, black stroma, erumpent 

 in elongated, irregular strips or series. The circumscribing line at the 

 base surrounds not a single disk with its subjacent perithecia, but 

 whole groups of perithecia. 



On branches of Robinia, Bethlehem, Pa. (Schw.), 

 Asci and sporidia about as in D. Rhois, which this much re- 

 seinbles. 



D. friabilis, (Fr.) 



Sphceria friabilis, Fr. S. M. II, 361. Herb. Schw. and Schw. Syn. N. Am. 1260. 

 Diatrypefriabilis, Cke. Grev. XIII, p. 38. 



Stroma very prominent, orbicular or elliptical, 2-4 mm. broad, 

 convex or depressed, subplicate, pale white within, indistinctly circum- 

 scribed around the base. Ostiola hidden. Asci (p. sp.) 45-50 x 10-- 

 12 jut. Sporidia allantoid, not much curved, 5-7 x 1J p. 



On Ilex priiwides and Viburnum prunifolhim, Carolina and 

 Pennsylvania (Schw.). 



The measurements of asci and sporidia are from spec, in Herb. 

 Schw. 



D. melasperma, (Fr.) 



Sphceria melasperma, Fr. S. M. II, p. 389. 

 Diatrypella melasperma, Sacc. Syll. 767. 



In the young state the pustules are innate in the bark, and cir 

 cumscribed by a dark line, stroma pale yellowish and without peri- 

 thecia. Disk erumpent. linear, black. When mature, pustules ellip- 



