372 



paraphyscs matted together at their tips. Sporidia biseriate, oblong- 

 fusiform, hyaline, 4-nueleate, becoming 3-septate and brown, 20-24 x 

 7-9 jut, constricted at the septa, ends obtuse. 



On dead leaves of Xerophyllum tenax, Mt. Paddo, Washington 

 (Suksdorf |, 



L. Typharum, (Desm.) 



Sphtzria scirpicola, var. Typharum, Desm. Cryp. de France, Fd. II, No. 1428. 



Pleospora Typharum, Fckl. Symb. p. 137. 



Leptosphceria Typharum, Karst. Myc. Fenn. II, p. 100. 

 Exslcc. Desm. Pi. Cr. 1. c. Fckl. F. Rh. 858. Kunze F. Sel. 256. Rab. Herb. Mycol. 

 731. id. F. F. 1040, 1448, 2552. Rehm Asc. 142. Thum. M. U. 352. Myc. March. 

 2350. 



Perithecia scattered, buried, globose- or elliptical, with the broad- 

 conoid apex projecting, black, glabrous, 160-200 /jt in the longer 

 diameter. Asci oblong, short-stipitate, 8-spored, 60-80 x 16-20 //, 

 paraphysate. Sporidia 2-3-seriate, oblong, obtuse, 3-septate, scarcely 

 constricted, slightly curved, clear yellow, 21-24x7-9 p.. 



On dead leaves and culms of Tyjiha latifolia, Montana (Kelsey), 

 Delaware (Commons). 



L. filamentosa, E. & E. Journ. Mycol. IV, p. 76. 



Perithecia immersed, scattered, small (200-225 //), depressed- 

 globose, the upper part slightly raising and barely rupturing the 

 cuticle. Ostiolum not prominent. Asci subcylindrical, 75-80x7-8 /i, 

 with abundant paraphyses. Sporidia biseriate, oblong-cylindrical, 

 3-septate, yellow, constricted at the septa, not curved, 12-15 x4-5 //, 

 ends obtuse. The spermogonial stage is a Coniothyrium (C. concen- 

 tricum)'? with small (4 /i), subglobosae, brown sporules. The parts of 

 the leaf (mostly the sides or tips) occupied by the ascigerous stage of 

 this species are quite dead, and soon become decayed and brittle. 



On dead places in living leaves of Yucca Jilame?itosa, Newfield, 

 N.J. 



L. marina, E. & E. Journ. Mycol. I, p. 43. 



Perithecia irregularly scattered, subelliptical, (J-| mm.), upper 

 part hemispheric-conical, projecting, closely covered by the blackened 

 epidermis, apex subtruncate with a papilliform ostiolum, which is soon 

 deciduous, leaving a broad opening. Asci 112-150x25-35 ju, nar- 

 rowed into a substipitate base. Sporidia 2-3-seriate, fusiform or cla- 

 vate-fusiform, yellowish, 1-3-septate (mostly uniseptate), slightly con- 

 stricted at the middle septum, 50-70x10-12 ju, ends subobtuse. In 

 this case, the greater number of septa does not seem to indicate 



