225 



Differs from L. quadrinucleatum, Karst, in its smaller sporidia 

 constricted at the septa. 



Var. pluriseptatum, E. & E., on decorticated maple limbs, Lyn- 

 donville, N. Y. (Fairman, 134) has asci (p. sp.) 70-75x10-12 p 

 Sporidia irregularly biseriate or oblique, oblong or clavate-oblong, 

 3-septate and constricted at the septa, obtuse, brown, 1 5-20 x 5-6 //. 

 In well developed specimens, one or both the terminal cells are again 

 divided by a septum, making the sporidia 3-5-septate. 



The spec, of Sphceria surrecta. Cke., on poplar board in our 

 Herb, is certainly the same as L. triseptatum, Pk., sec. specc. from 

 Peck. The ostiola are narrow and at first often not at all compressed. 

 The sporidia are a little larger, 15-20x7-8 p. (25x8 ft, Cke.), often 

 a little narrower below, clavate-oblong, sometimes constricted at all 

 the septa (torulose), but more distinctly so at the middle septum. 

 L. triseptatum, Pk., should probably be referred to L. quadrinucle- 

 atum, Karst, as a small-spored var. 



L. Primi, E. & E. Journ. Mycol. IV, p. 64. and Trans. Roch. Acad. 

 Sci. I, p. 49. (Plate 25) 



Perithecia gregarious, sunk in the wood, J-J mm. diam. Ostiola 

 erumpent through the bark and strongly compressed. Asci clavate- 

 cylindrical, 80-91 x 8-9 p, with abundant paraphyses. Sporidia uni- 

 seriate, mostly 4 in an ascus, oblong, rounded at the ends, brown, 

 3-septate and constricted at the septa, a little narrower at the lower 

 one, 1 8-22 x 6-8 p. This can hardly be L. acervatum, Karst , which 

 has the perithecia erumpent in small clusters (casspites minutes) and 

 sporidia scarcely constricted. 



On Prunvs serotina, Lyndonville, N. Y. (Fairman). 



L. rhizophilum. (B. & C.) 



Sphczria rhizophila, B. & C. Grev. IV, p. 143. 

 Lophiostoma rhizophilum, Sacc. Syll. 5465. 



"Perithecia scattered, ovate. Ostiolum short, transverse, linear. 

 Asci clavate. Sporidia shortly fusiform, curved, pointed, 15 p long, 

 triseptate, at length brown.'' 



On exposed roots, Pennsylvania (Michener). 



L. pseudomacrostomum, Sacc. Mich. I. 339. Berlese Icon. tab. 7. 

 fig. 1. id. F. Moricoli, fasc. II, No. 6. 



Exsicc. EH. & Evrht. N. A. F. 1629. 



Perithecia gregarious, subimmersed, globose, black, f mm. diam. 

 Ostiolum compressed, emergent, rather bread. Asci cylindric-clavate, 

 29 



