516 



Cr. Nitschkei, Fckl. Symb. p. 212. 



Vaha Mori, Nits. Pyr. Germ. p. 157. 

 Exsicc. Sacc. M. V. 1187. Fckl. F. Rh. 955. ' 



Stroma effused, innate in the substance of the bark, covered by 

 the epidermis which is not discolored, but merely perforated by the 

 ostiola, forming an irregular, often interrupted and valsiform crust 

 more or less elevated and surrounded by an irregular, black line, the 

 enclosed areas being a little paler. Perithecia sunk to the wood, of 

 medium size, crowded and often angular from mutual pressure, more 

 rarely loosely scattered, suddenly narrowed into a short, thick neck, 

 with much thickened, rather large, subglobose, faintly quadrisulcate 

 ostiola slightly prominent. Asci narrow-clavate, long-pedicellate, 

 polysporous, 80-86 x 12-15 p (60-66 x 9 p, Sacc). Sporidia conglo- 

 bate, allantoic!, 12-15 x 2-2 p, yellowish, (8-10 x 2J p, Sacc). 



On bark of Ulmus, London, Canada (Dearness). 



This seems to agree fairly well with C. Rabenhorstii, Nits., but 

 as we have no authentic specc of that species, we have adopted the 

 determination of Saccardo, who considers it a large-spored form of 

 C. Nitschkei 



Cr. pustulata, (E. & E.) 



Diatrypella pustulata, F). & F. Journ. Mycol. Ill, p. 116. 



Perithecia gregarious, either standing singly and tuberculiform or 

 conic-hemispherically prominent, (|-f mm. diain.), or 2-4 confluent in 

 a thin, tuberculiform stroma, 1-1 J mm. cliam., brownish-black outside, 

 whitish within, closely covered by the blackened epidermis which is 

 pierced by the short-cylindrical, stout, obtuse, mostly quadrisulcate 

 ostiola sometimes as much as 200-300 p long. The bases of the peri- 

 thecia are slightly sunk in the wood, but when the bark becomes 

 loosened they remain attached to it and fall away with it, leaving the 

 wood pitted with shallow cavities. Asci clavate-fusoid, 100-110 x 10/*, 

 including the stipitate base, paraphysate, polysporous. Sporidia 

 irregularly crowded, allantoid, slightly curved, yellowish-hyaline, 5-8 

 (mostly 5-6)xlJ-lJ p. 



On dead stems of Lonicera (cult.), Newfield, N. J., and on Sym- 

 phoricar pus vulgaris, Manhattan, Kansas (Kell. & Swingle, 1926). 



With the specc. on Lonicera was a Libertella with curved spores 

 35-40xl-l| p, (Z. Loilicerce, Cke. & Hark)? The part of the 

 branch occupied by the fungus is deeply penetrated by a black, cir- 

 cumscribing line marking the limits of the stroma. 



