170 



Var. millegrana (Sphcaria millegrana, Schw.), on dead trees, 

 Washington, and on decorticated oak limbs, New Jersey, has asci 

 p. sp. 80x10-12 /i, and sporidia 12-15x8-10 p. 



Var. transversalis (Sphceria transversal is, Schw. 1. c), on rotten 

 limbs of Liriodendron, South Carolina (growing transversely and 

 surrounding the limb like a ring) differs from var. millegrana in its 

 annular mode of growth. 



The following is a list of measurements of asci and sporidia in 

 some of the exsiccati above quoted. Sacc. M. V. 1158. asci (p. sp.) 

 65-70x8-10 fi, spor. 10-12 x 7-8 p. Kunze. 260, spor. 8-1 Ox 6-8 p. 

 Rabh-Winter F. E. 2766, asci (p. sp.) 60x8-10 p, spor. 8-10 x 6-8 p. 

 Rehm Asc. 695, asci (p. sp.) 65-70x8-10 p, spor. 8-12x7-8 p. 

 Sydow M. March. 1835, spor. 10-12x7-9 p. Measurements of R. 

 millegrana, Schw. Rav. Car. IV, 58, spor. 8-11x6-7//. Raw F. 

 Am., spor. 10-12x6-8 p. Specc. in our Herb, from Delaware, have 

 spor. 7-8 x 5-7 p (mostly 6-8 x 5-6 p). 



Excepting the var. millegrana, the American specimens have asci 

 and sporidia about as in European specimens. There is no appreciable 

 difference in the perithecia from the various localities, except a little 

 variation in size and roughness. Were there no intermediate forms, 

 the Washington and Delaware specimens might consistently be sepa- 

 rated, on account of the great disparity in the size of the sporidia, but 

 the occurrence of almost every gradation in size between them, makes 

 any specific distinction a matter of doubtful expediency, and we have 

 therefore, placed R. millegrana as a Syn. of R. pidreraeea, (Ehr.) 



R. ulmaticolor, (B. & C.) 



Splicer ia ulmaticolor, B. & C. Grev. IV, p. 152. 

 Rosellinia ulmaticolor, Sacc. Syll. 980. 



" Perithecia very minute, on effused, umber-colored spots. Asci 

 linear. Sporidia uniseriate, brown, elliptical, 7J-8 p long. 

 On smooth, decorticated limbs/' South Carolina. 



R. glandiformis, E. & E. Proc. Acad. Nat. Sci. 1. c. 



Perithecia scattered, ovate-globose, black and glandular-rough- 

 ened, 11 J mm. diam., the lower part (about J) sunk in the wood, and 

 generally with a slight reinforcement around the lower half of the 

 projecting part, like the cup of an acorn, but this is sometimes want- 

 ing or reduced to a mere thin, granular coat. Ostiolum papilliform, 

 mostly small, sometimes obsolete, the apex of the perithecium being 

 then evenly rounded. Asci cylindrical, 100-114x8-10 p, with 

 abundant paraphyses. Sporidia uniseriate, acutely elliptical, opake, 

 (subhyaline at first), 14-15x7-8 p. Allied to R. subicidata, (Schw.) 



On a live oak stump, Louisiana (Langlois), on rotten wood, Long 

 Isknd, N. Y. (Zabriskie). 



