(347) 



slighly narrower, constricted, light fuscous, subpellucid, 

 16-20 x 7 a. 



On dead leaves of Yucca sp., Stanford University, Calif., 

 Nov. 12, 1901, C. F. Baker, no. 71. 



The somewhat immature stages agree perfectly with the 

 type of Phyllachora yuccac from Mexico. 



Amphisphaeriaceae . 



Trematosphaeria cactorum sp. now 



Perithecia scattered or gregarious, conic-spheroid, rough, 

 dull black, not collapsing, 130-180 /i, ostiolum indistinct; 

 asci subcylindric, short pedicellate, thin-walled, 100-120 x 8- 

 10/i; paraphyses abundant, thread-like; ascospores longi- 

 tudinally monostichous, ovate-oblong, fuscous, 3-septate, one 

 medial cell usually enlarged, ends obtusely conic, 20-25 x 7~~ 

 8,u. 



On old spines of Cercus sp., Stanford University, Calif., 

 Oct. 19, 1901, C. F. Baker, no. 1. 



Pleosporaceae. 



Metasphaeria washingtoniae sp. nov. 



Perithecia densely gregarious over large areas, often two 

 or three linearly confluent, at length blackening the substra- 

 tum, elevating and finally rupturing the epidermis, black, 

 white within, subspheroid, not collapsing, ostiolum obscure, 

 about 150/^; asci subcylindric, about 70 x 12//; paraphyses 

 numerous, rather broad (2 //), branching above, with the tips 

 irregular and subswollen ; ascospores distichous, hyaline, 

 strongly constricted into two unequal parts, 3-septate, or at 

 length 4-septate, about 20 x 4 ,«. 



On dead petioles of Washingtonia, Stanford University, 

 Calif., Nov. 26, 1901, C. F. Baker, no. 25. 



Xylariaceae. 



Xylaria Californica sp. nov. 



Gregarious or subcespitose ; stromata slender, simple, not 

 branched, erect or variously flexed, reaching 7 cm. or more 

 long, the basal portion densely hirsute with stiff, spreading, 

 dark brown hairs, about lyi mm. thick, fertile portion 2-2^ 

 cm. long by about 2 mm. thick, sterile apex about 1 cm. x 



