476 



This species (sec. Peck) was found on dead alders, near Buffalo, 

 N. Y. 



We have seen no specc, and translate the diagnosis from Fries' 

 Systema. 



*** Macrosporxa. SporidAa ni&re them 12 /i long. 

 V. arabiens, (Pers.) 



Sphizria ambiens^ Pers. Syit. p. 44. 



Sphcsria deplanata, Nees, in Fr. Summa Veg. Sc. p. 394- 



Sphcsria capsularis, Pers. Syn. p. 42. 



Sphcsria sphincirina, Fr. (pr. p.) S. M. II, p. 400. 



Valsa corticis, Tul. in Ann. Sci. Nat. Ser. IV, torn. V, p. 117. 



Sphceria tetraspora, Curr. Linn. XXIl, p. 279, fig. 14&. 



Vatsa ambietts, Fr. Summa, p. 412. 

 V^alsa conscripla, C. & K. Grev. VII, p. 80. 



( Valsa cooperta, Cke. Valsei of the U. S. p. 118) > 

 Ex.sicc. Fckl. F. Rh. 616, 2141.— Kze. F. Scl. 149.— Rab. F. %. 1131, 1534.— Rehm Asc. 4b. 

 171, 223.— Sydow. M. March. 33, 465, 663.— Krgr, F. Sax. 172, 431.— Roum. F. G. 

 1178, 4447.— Cke. F. Brit. 2d Ser. 232. — Plowr. Sph. Brit. 46.— Sacc. M. Ven. 1493. 

 Ell. N. A. F. 868. 



Stroniata numerous and generally thickly scattered, suiTounding 

 and extending for some distance along the limbs, orbicular or ellip- 

 tical at base, and 1 1-3 mm. broad, obtusely conical above and, for the 

 most part, distinctly pustulate-prominent, covered by the closely 

 adherent epidermis, which is pierced by the erumpent disk or stel- 

 lately cleft with the laciniae adhering. Perithecia 4-20 (mostly 6-10), 

 subcircinate in the unaltered substance of the inner bark, about J mm. 

 diam., and mostly not crowded, necks slender, decumbent, with their 

 large, depressed-spherical, black ostiola erumpent around the margin 

 of the small, whitish disk or irregularly arranged, crowded and obliter- 

 ating the disk. Sometimes the epidermis is slightly depressed just 

 around the disk, with a circle of slight protuberances indicating the 

 position of the subjacent perithecia. Asci (p. sp.) 40-55 x 12-15 p., 

 4^8-spored, with a slender, stipe-like base 30-35 fi long. Sporidia 

 conglomerate or snbbiseriate, allantoid, hyaline, slightly curved, 

 obtuse, 14-24 x 3-5 p. in the 8-spored asci, in the 4-spored asci, 24-36 

 X 5-8 p.. 



.On dead limbs of various deciduous trees, common, at least 

 throughout the northern U. S. and Canada. 



We have s]>occ. from Canada on ash, hawthorn, elm, oak, bass- 

 wood and hickoiy; from Iowa, on Pyrus coronaria; from Montana, 

 on Shepherdia Canadensis; from New York, on Acer rubruni; from 

 Nebraska, on Sumbucus; from New Jersey, on Nyssa, Liquidambar, 

 and Pyrus, and the tetrasporous form on Moms, from Illinois. 



