595 



I), eiiteroieiica, (Fr.) 



Sphcsria enteroleuca , Fr. S. M. II, p. 381, Schvv. Syn. N. Am. 1314. 

 1/alsa enteroleuca, Cke. Syn. 1971. 



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

 pea. Perithecia minute, suhglobose, 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 j mm. diam. Ostiola only slightly prominent, rather flattened, 

 sulcate. Asci 50 x 12-15 n (p. sp.). Sporidia allantoicL 5^6 x 1 //. 



D. proriimpeus, (Wallr.) 



Sphteria 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- 

 sembles. 



D. friabilis, (Fr.) 



Sphczria friabilis, Fr. S. M. II, 361. Herb. Schw. and Schw. SyH. N. Am. 1260. 

 Diatrype friabilis, 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 p.. Sporidia allantoid, not much curved, 5-7 x 1| p.. 



On Ilex prinoides and Viburnum prunifolium. Carolina and 

 Pennsylvania (Schw.). 



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

 Schw. 



D. melaspernia, (Fr.) 



Sph&ria 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 ellij> 



