594 



D. irregularis, C. & E. Grev. VI, p. 92. 



SiToniata wart-like, 2-3 nun. diam., closely covered by the epi- 

 dermis, which is pierced by the apex of the stroma, often confluent, 

 forming a flat blister-like swelling 1 cm. broad, and entirely covered by 

 the epidermis, except \vhere it is pierced by the small, black apices of 

 the separate stromata. cinereous inside, not penetrating to the wood. 

 and not circumscribed; other stromata on a decorticated part of the 

 same limb, are seated on the wood; these are oblong and subseriate- 

 ( -on fluent. Perithecia 8-12 in a single stroma, ovate, black, about | 

 mm. diam., necks short, with their obtusely conical, sometimes quadri- 

 suicate, and finally irregularly dehiscent ostiola slightly prominent. 

 Asci oblOng-clavate, stipitate, 100-1 15 x 10-12 p (p. sp. 40-50 p long), 



polysporous. 



On dead limbs of Pyrus communis, Newfield, N. J. 



Our specimen is not well matured, and the sporidia refuse to 

 -eparate and leave the asci. Sec. Cooke they are 8 p. long. This 

 seems more closely allied to D. verrucceformis than to D. quercina, 

 and we are inclined to regard it as only a var. of that species. 



D. subfiilva, (B. & C.) 



Diatrype subfulva, B. & C. Grev. IV, p. 97. 

 Diatrype olivacea, C. & E. Grev. VI, p. 9. 

 Diatrypella subfulva, Sacc. Syll. 764. 



" Erumpent, convex, at first olivaceous, then black. Perithecia 

 large, few. Ostiola obtuse. Asci clavate, subsessile. Sporidia nu- 

 merous, yellow, linear, obtuse, slightly curved, 10-12 p. long." 



On dead limbs of Nyssa, Carolina and New Jersey. 



Our specc. of D. olivacea, C. & E., are without fruit. The 

 species is now considered by Cooke as synonymous with D. subfulva , 

 P>. & C. 



D. ammlaiis, (Schw.) 



Spheeria annulans, Schw. Syn. N. Am. 1270. 

 Diatrype annulans, Cke. Grev. XIII, p. 38. 



Stromata conic-tuberculifbrm, truncate above, 1-1| mm. diam. : 

 seriate-subconfluent in rings surrounding the limb or extending longi- 

 tudinally, white inside, rarely solitary. Ostiola prominent on the 

 truncate apex of the stroma, quadrisulcate, stout and short. Perithecia 

 (4-6 in a stroma), contracted into short, black necks above. Asci 

 (p. sp.) 45-50 x 15-20 ( , with a slender base. Sporidia yellow in the 

 mass, nearly hyaline when single, allantoid, 6-7 x 1J-1J t u. 



On decorticated branches of various kinds of soft wood, Carolina 

 and Pennsylvania (Schw.). 



Measurements from spec, in Herb. Schw. 



