16 BULLETIN 380, U. S. DEPARTMENT OF AGRICULTURE. 



short, hyaline, subulate, 6 to 8 by 1 /*; pycnospores ovoid oblong, hyaline, the 

 contents of each pycnidial cavity adhering in a globular mass, when set free, 

 3 to 4 by 1 to 1.5 ti. 



PEEITHECIA. Stromata the same or similar to those producing pycnidia ; 

 perithecia membranous, few to many, usually 100 or more, 200 to 850 /* in 

 diameter, irregularly arranged in several series, prolonged into slender necks 

 which sometimes protrude from the stroma ; ostioles depressed conical ; asci, 

 oblong cylindric or subclavate to fusoid, substipitate, 25 to 35 by 4.5 to 5.5 ^ ; 

 ascospores irregularly biseriate, cylindric to allantoid, with a thin gelatinous 

 envelope, hyaline when separate, slightly yellowish in mass, 7 to 11 by 1.5 to 

 3 A* ; mostly 7.5 to 10 by 2 to 2.5 ti. 



CULTURAL CHARACTERS. Cultures one month old on white corn meal have a 

 cadmium and orange to capucine btlff mycelium. It is distinguished from 

 E. gyrosa by its slower growth and brighter color and the want of tubercular, 

 stromalike masses. No spores of this species have been produced in any of 

 the writers' cultures. 



HOSTS. Quercus gambellii, Q. leptopliylla, Q. nitescens, Q. utahensis. Bethel 

 also reports it on Q. punycns. 



TYPE LOCALITY. Palmer Lake, Colo. 



GEOGRAPHICAL DISTRIBUTION. Colorado and New Mexico. 



ILLUSTRATIONS. Pycnidia : H. and P. Syd., 1912, in Ann. Mycol., vol. 10, no. 1, 

 p. 82, figs. 1-5. 



EXSICCATI. Pycnidia and perithecia: H. and P. Syd., Fung. Exot, 88, on 

 Quercus. Pycnidia: Bart. Fung. Col., 4002, on Quercus utahensis. 



In shape and size of pycnospores and ascospores this species closely 

 resembles E. gyrosa, but is easily separated by the much greater size 

 of its stromata, its brighter color and very numerous, small, regular 

 pycnidial cavities and more numerous perithecia, as well as its geo- 

 graphical distribution. 



The specimens of the Sydow exsiccati, No. 88, in the Pathological 

 and Mycological Collections of the Bureau of Plant Industry show 

 both pycnidia and perithecia. 



Section 2. Ascospores oblong fusiform to oblong ellipsoid, uni- 

 septate when mature. 



ENDOTHIA FLUENS (Sow.) S. and S. nov. comb. 



SYNONYMS : 



Pycnidia: Sphaeria fluens Sow., 1814, Col. Fig. Engl. Fungi, Sup. pi. 438, 



figs. 1, 2. 



Sphaeria gyrosa Berk., 1836, Brit. Fungi, p. 254. Not Schw. 

 Endothia gyrosa Fries, 1849, Sum. Veg. Scand., p. 385. p. p. Europ. 

 Sphaeria radicalis Fckl., 1861, Enum. Fung. Nass., p. 76, no. 640. 

 Endothia gyrosum Fckl., 1869, Symb. Mycol., p. 226. p. p. spec. cit. 

 Endothia gyrosa (Schw.) Fckl., forma castaneae vescae Sacc., 1876, Mycol. 



Ven. Exs., no. 929. 



Endothiella gyrosa Sacc., 1906, in Ann. Mycol., v. 4, no. 3, p. 273. 

 Perithecia : Sphaeria radicalis Schw., Fries, 1828, Elenchus Fung., v. 2, p. 73. 

 Sphaeria radicalis Schw., Rudolphi, 1829, in Linnaea, Bd. 4, Heft 3, p. 393. 

 Sphaeria radicalis Schw., Fries, 1830, in Linnaea, Bd. 5, Heft 4, p. 541, 



