24 PLANTS BAKERIANuE. 



or finally exposed, about 150-175/i, beset by a few rather 

 stiff brown hairs or bristles about 30-50/A long, strongly 

 collapsing, ostiole conspicuously papillate ; asci oval or ovate, 

 80-90x20-25yu. ; paraphyses filiform ; ascospores distichous, 

 oval, 5-7-septate, some or all of the cells once or twice 

 vertically divided, slightly but plainly constricted at all the 

 septa, from yellow to brown, finally becoming very dark 

 and opaque, and seeming somewhat shrunken, 20-30x 

 12-15/*. 



On dead stems of Clematis ligusticsefolia, at Hermosa, 1 

 April. 



PYRENOPHORA ERIOGONI, n. sp. Perithecia buried, be- 

 coming exposed by the sh redding of the bark, scattered, 

 dark-brown, about mm., clothed throughout with some- 

 what crisped, spreading, occasionally septate hairs that are 

 80-150x4/i in length, dark-fuscous at base but nearly 

 hyaline at the tip, ostiole inconspicuous, slightly depressed 

 but not collapsing; asci cylindric, thick walled, about 120x 

 25/t; paraphyses numerous, filiform ; ascospores ovate, ends 

 obtusely rounded, bright-brown, 7-septate, constricted at the 

 middle septum, ends unequal, all the cells 2-4 times verti- 

 cally divided, about 25-30xl2yit. 



Hermosa, 3 April, on dead stems of Eriogonum ; 11. 62. 

 The asci and spores are much as in some forms of Pleospora 

 herbarum, but the species is easily distinguished by its vesti- 

 ture of crisped brown hairs. 



VALSACE^E. 



DIAPORTHE CRINIGERA,EH. &Ev. Proc.Philad. Acad.(1890) 

 234. Hermosa, 29 March, on bark of the larger branches 

 of oak. 



Valsa boreella, Karst. At Hermosa, 1 April, on dead 



