474 



Sporidia allantoid, liyaliuo, l JJx3J . Sperniatia minute, 3-4 x 1 jw. 

 On a root of Rhododendron, Bethlehem, Pa. (Schw.). 



V. anomia, (Schw.) 



Sphezria anomia, Schw. Syn. N. Am. 1316. 

 Valsa anomia, Schw. Cke. Valsei of the U. S. No. 34. 



Convex, irregular, free, rugose, stroma formed of the wood, cin- 

 ereous-black. Ostiola exserted, distant, black, smooth. Sporidia (sec. 

 Berk.) 10 t u long, with uniseptate stylospores in other perithecia. Spo- 

 ridia (sec. Cke,) 7-8 p. long. 



On Robinia, North Carolina (Schw.). 



Apparently different from the European species of the same name 

 which appertains to Pseudovalsa prqfusa. 



V. microstoma, (Pers.) 



Sphcei ia microstoma, Pers. Syn. p. 40. 

 Valsa microstoma, Fr. Sumtna, p. 411. 



Stroma roundish-oval at base, convex or more rarely conical, 

 attenuated abruptly into an oval, elliptical or orbicular disk, immersed 

 in the outer layer of the inner bark, of which the surface assumes a 

 chestnut color. Disk erumpent through transverse cracks in the epi- 

 dermis. Perithecia 6-20 in a stroma, in a single layer, minute, 

 crowded. Ostiola somewhat thickened, rounded or almost globose, 

 abbreviated, black and shining, crowded in a plane disk. Asci oblong 

 or clavate, sessile, 8-spored, 40-48 x 6-8 p.. Sporidia crowded or 

 biseriate, allantoid, hyaline, 8-10 x2-2| p. Spermogonia cytisporoid, 

 many-celled. Spermatia allantoid, 5-6 x 1 J p, on long basidia. 



On bark, Pennsylvania and Carolina (Schw.). 



V. allostoma, (Schw.) 



Spharia allostoma, Schw. Syn. N. Am. 1332. 

 Valsa allostoma, Stev. 1. c., No. 106. 



At first immersed in the wood, witli only the globose-stellate osti- 

 ola prominent, finally emergent and almost free. Conceptacles large, 

 and often extensively confluent. Ostiola at length becoming terete, 

 generally dilated at the apex, rigid. Perithecia rather large, crowded, 

 almost entirely without any stroma. The groups of confluent concep- 

 tacles finally form, as it were, a continuous crust. Sporidia (sec. Stev- 

 enson 1. c.) 9 x 3 p., allantoid, hyaline. 



On a log of Robinia, near Lancaster, Pa. (Schw.). 



V. monadelpha, Fr. Summa Veg. Sc. p. 411. 



Sphceria monadelpha, Fr. S. M. II, p. 382. 

 Valsa monadelpha, Fr. Summa Veg. Sc. p. 411. 

 Exsicc. Desm. PI. Cr. Ed. I, 961, Ed. 2nd 261. 



