170 



Var. nulleyraiHt (Sphceria millegrana^ Schw.), on dead trees. 

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

 ]. sp. 80 x 10-12 /A and sporidia 12-15x8-10 //. 



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

 limbs of Liriodendron, South Carolina (growing transversely and 

 surrounding the limb like a ring) differs from v&r.milleyrana 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.) 

 (15-70x8-10 /A spor. 10-12 x 7-8 //. Kunze. 260, spor. 8-10x6-8 p.. 

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

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

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

 iniUegrana, Schw. Rav. Car. IV, 58, spor. 8-11 x 6-7 /*. Rav. 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 //). 



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. pnlreracea, (Ehr. ) 



R. nlmaticolor, (B. & ( 1 .) 



Sphceria ulmaticolor, B. & C. Grev. IV, p. 152. 

 Rosellinia idmaticoloi\ Sacc. Syll. 980. 



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

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

 On smooth, decorticated limbs," South Carolina. 



R, glandifoi'mis, E. & E. Proc. Acad. Nat. Sci. 1. c. 



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

 ened, 1-1 \ 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 u., with 



V / 



abundant paraphyses. Sporidia uniseriate, acutely elliptical, opake. 

 (subhyaline at first), 14-15x7-8 p. Allied to /**. xnbiculaiu. (Schw.) 



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

 Island, N. Y. (Zabriskic). 



