342 



beneath the epidermis. Asci oblong-cylindrical, 75x22 /;. sulisrssile, 

 paraphysate. Sporidia biscriate, stra \v-yclln\v at first, becoming dark 

 brown, 3-septnto and constricted in the middle, ends rather acute, with 

 a longitudinal septum extending across the two middle cells, 20-24 x 

 10-11 //. sul (inequilateral. 



On dead herbaceous stems, common in the Rocky Mountain region. 



f o 



Tin 1 sporidia like those of PL planisp ora, and PL aurea are more 



or less distinctly flattened. 



PL gigaspora, Karst. Heclwigia 1884, p. 37. 



Pleospora amplispora, K. & E. Bull. Wash. Coll. Lab. Nat. Hist. 1884, p. 41. 



Perithecia scattered, superficial, black, subglobose or hemispheri- 

 cal, J mm. diam., collapsing when dry. Ostiola short, cylindrical or 

 subconoid. Asci oblong, 250 x 75 p. (paraphysate)? Sporidia oblong, 

 obtuse, slightly constricted in the middle, 12-16-septate, muriform, 

 60-75 x 20-24 //, yellow-brown becoming dark brown. 



On dead stems of Lupinus, Mt. Paddo, Washington (Suksdorf). 



PL diaporthoides, E. & E. (in Herb.) 



Perithecia scattered or subseriate, buried, minute (J mm.), with 

 rather thick, subcoriaceous walls, often in series of 3-4 lying close 

 together. Ostiolum exserted, short-cylindrical, rough, except the 

 smooth, black, depressed-conical tip. Asci 75-85x12-15 p., substipi- 

 tate, p. sp. 60-70 /j. long, with paraphyses. Sporidia uniseriate or 

 subbiseriate above, oblong-elliptical, su bin equilateral, ends obtusely 

 pointed, 3-septate, with a more or less perfect longitudinal septum. 

 14-18x7-8 JM. 



On dead stems of Pastinaca sativa with OpMobolus Bardana}, 

 Fckl., Newfield, N, J., July, 1890. 



Differs from Pleospora microspora, Niessl., in its habitat, and 

 constantly 3-septate, rather smaller sporiclia, and more prominent 

 ostiola. 



PL lactueicola, E. & E. Journ. Mycol. IV, p. 64. 



Perithecia scattered, suberumpent, depressed-hemispherical, 175- 

 200 ft diam. Ostiolum papilliform. Asci clavate-cylindrical, 90-100 

 x 10-12 a. Sporidia obliquely uniseriate or rarely subbiseriate above, 

 oblong, slightly constricted, 3-septate. with each of the middle cells 

 divided by a longitudinal septum, ends subacute and suboblique, 

 14-16x6-7 fJL. Allied to PL Bardancv, Niessl., but, compared with 

 the specimens of that species in Linhart's Fungi Hungarici, No. 168 r 



