WEST VIRGINIA GEOLOGICAL SURVEY 5 1 



a narrow black border. Perithecia epiphyllous, scattered, 

 lOO to no jx diameter, convex-prominent above, visible also 

 below. Sporules narrow-elliptical, hyaline, 2-nucleate, 5 to 6 



X 2 to 3 /I. 



Differs from P toxica, E. & M., in larger deciduous spots 

 with a narrow border, and its narrow-elliptical sporules. 

 P. LiNDERicoLA E. & E., Proc. Phila. Acad., 1894, 354. 



Type habitat : On leaves Benzoin Benzoin, Aug. 26, 

 1894 (Ntittal, discov. 1688, 593). 



Spots various ; punctiform and minute without any definite 

 border, often irregular in shape i mm. to i or 1.5 cm. diam- 

 eter, or marginal, forming a narrow strip along the. edge 

 of the leaf for half its length, pale brown, nearly the color 

 of weather-beaten wood, with a dark (almost black) border. 

 Perithecia epiphyllous, hemispherical, 100 to 120 f* diameter, 

 covered by the blackened epidermis which is raised into 

 pustules barely pierced at the apex. Sporules oblong-el- 

 liptical, hyaline, 4 to 7 x 2 to 3 /i. 



This differs in almost every respect from Ph. Linderae 

 E. & E. 

 P. Smilacis subeffusa E. & E. 



On Smilax rotundifolia, Sept. 21, 1894 {Nuttall, 1701, 

 594). Perithecia scattered over surface of dead dry leaves 

 of the host. 

 P. OxYDENDRi E. & E., Field Mus. Bot., i : 104 (1896). 



Type habitat : On leaves of Oxydendron arboreum, Oct. 

 10, 1894 {Nuttall, discov. 1717, 605). 



Spots suborbicular or elliptical, reddish-gray, 3 to 8 mm. 

 diameter, with a narrow, shghtly raised dark red border, 

 beyond which the leaf is generally shaded reddish-purple. 

 Perithecia epiphyllous, subapplanate, loo to 120 fi. diameter. 

 Sporules oblong-elliptical, 2-nucleate, hyaline, 7 to 8 x 2.5 to 

 3 IX. The spots finally become of a lighter, dirty-white color. 

 P. Celastri E. & E., Field Mus. Bot, 1:104 (1896). 



Type habitat : On leaves Celastrus scandeiis, Oct., 1894 

 (Nuttall, discov. 1718, 606). 



Spots mostly marginal, 8.5 to i cm. diameter, ferruginous, 

 definite, with a narrow, darker border. Perithecia epiphyl- 

 lous, subapplanate, 150 /a diameter. Sporules oblong, 7 to 

 10 X 2 to 2.5 fji hyaline, 2-nucleate. 

 P. globifera E. & E., Field Mus. Bot., 1:104 (1896). 



Type habitat: On leaves Cornus florida, Oct. 24, 1894 

 (Nuttall. discov. 1728, 615). 



Spots marginal, light-brown, continuous, extending across 

 the tip of the leaf and partly down each side, 5 to i cm. 

 wide, separated from the green part of the leaf by a narrow, 

 purple margin. Perithecia amphigenous, discoid, black, 100 



