169 

 R. obliqukta (Somni.) var. Americana, E. & E. 



Sphceria obliquata, Soniiu. Fl. I^ap. p. 213. 

 Soydaria obhguata, Ces. & De Not, Schema p. 52. 

 Rosellinia obliquata, Sacc. Syll. 949. 



Perithecia gregarious, \ mm. diam., erumpent, depressed-globose, 

 glabrous or with a few rudimentary, gland-liko liairs below ; ostiolum 

 acutely papilliform or obsolete. Asei cylindrical, 120-130x6-7 fi. 

 Sporidia uniseriate, inequilaterally elliptical, brown, continuous, 8-10 

 X 5-6 n- Paraphyses filiform. 



On scales of dead cones o^ Piims ponderosa, Belt Mts,, Montana 

 (Anderson 613.) 



The perithecia in the Montana specimens are not obliquely at- 

 tached and the sporidia are rather smaller than stated by Dr. Winter 

 in Die Pilze (10-12 x 7 //). The perithecia also are mostly evenly 

 rounded above, without any distinct ostiolum. 



R. obtusissima, (B. & C.) 



Spheeria obtusissima, B. & C. Grev. IV, p. 142. 

 Rosellinia obtusissima, Sacc. Syll. 966. 



Perithecia ovate, with a papilliform orifice, half buried amongst 

 the fibers of the wood. Asci linear. Sporidia uniseriate, elliptical, 

 brown, very obtuse, 12-14// long. 



On bleached rotten wood, Pennsylvania (Michener). 



D. Perithecia stnaU, gregarious, not bristly or hairy. 



R. pulveracea, (Ehr.) 



sphceria pulveracea, Ehr. in Pers. Syu. p. 83. 



Sordaria Friesii, Niessl. Vorarb. z.. Crypt. Flora Von Mahren, p. 112. 

 Rosellinia pulveiacea, Fckl. Synib. p. 149. 

 Rosellinia Friesii, Niessl. Beitr. z. Kentniss d. Pilze, p. 34. 

 Sphceria millegrana, Schw. Syn. N. Am. 1559. 

 Sphceria transversalis, Schw. Syn. N. Am. 1560. 

 Exsicc. Fckl. F. Rh. 936.— Kunze F. Sel. 260.— Rab. F. E. 338, 1246, 2766.— Rehm Asc. 

 192, 695.— Rav. Car. IV, 58 —id. F. Am. 672— Sacc. M. Ven. 1 158. —Rab. F. E. 2766. 

 Mycoth. March. 1335 — Bll. N. A. F. 193, 



Perithecia densely gregarious, often forming a continuous crusta- 

 ceous layer, but sometimes scattered, ovate-globose, minutely tuber- 

 cular-roughened, about \ mm. diam. Ostiolum papilliform, soon per- 

 forated. Asci cylindrical, p, sp. mostly 60-70x10-12 /./, with a 

 stipitate base 20-30 // long, and filiform paraphyses. Sporidia uni- 

 seriate, elliptical, brown, 8-15x6-9 // (mostly 10-12x7-.8 fi). 



Common on dead wood (and bark) of deciduous trees from Maine 

 to Louisiana, and west to the Pacific coast. 

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