192 The North American Cup-Fungi 



dark-colored, almost black; asci 8-spored, subcylindric; paraphy- 

 ses filiform and rather strongly enlarged. 



With a Pestalotia as its conidial stage. 



Type species, Dermatea hrunneopruinosa Zeller. 



On leaves of Caultheria Shallon in the far west. 1. P. brunneopruinosa. 



On leaves of Rhododendron maximum in the east. 2. P. Rhododendri. 



1. Pestalopezia brunneopruinosa (Zeller) Seaver, Mycologia 

 34:300. 1942. 



Pestalotia gihbosa Hark. Bull. Calif. Acad. Sci. 2: 439. 1887. 

 Dermatea brunneopruinosa Zeller, Mycologia 26: 291. 1934. 



Apothecia superficial, .6-2 mm. in diameter, closed at first, 

 then cup-shaped, sessile to short-stipitate, externally powder>'- 

 villose, fawn-colored to wood-brown; hymenium fuscous-black 

 due to the brownish tips of the paraphyses which form an 

 epithecium; asci clavate-cylindric, reaching a length of 120-140 n 

 and a diameter of 10-14 m; spores ellipsoid, hyaline, 1-seriate, 

 containing one or two oil-drops, 7-10 X 14-20 /x; paraphyses 

 slender, clavate, light-brown above, 4-6 /x in diameter at their 

 tips. 



On large dead spots on leaves of Gaultheria Shallon associated 

 with Pestalotia gibbosa which represents its conidial stage. 



Type locality: Coos County, Oregon. 



Distribution: Washington to northern California. 



2. Pestalopezia Rhododendri Seaver, Mycologia 34: 300. 1942. 



(Plate 112.) 



Apothecia sparingly scattered near the center of circular or 

 subcircular dead spots apparently caused by the conidial or 

 associated stage of the fungus, Pestalotia, the spots becoming 

 brown and bordered with concentric rings of variegated colors 

 from red to brownish the apothecia not exceeding 1 mm. in 

 diameter, appearing as minute, light-colored balls, gradually 

 expanding and exposing the dark-colored discs; asci subcylindric 

 to clavate, tapering into a short, stem-like base, reaching a length 

 of 150 m and a diameter of 14 m, 8-spored; spores 1-seriate, 

 ellipsoid, hyaline, 8 X 16 m; paraphyses slightly enlarged above, 

 pale-brown, reaching a diameter of 6 m at their apices. 



Associated with what appears to be the Pestalotia stage on 

 Rhododendron, the spores with three brown cells, 10 X 20 /x, 



