82 The North American Cup-Fungi 



13. Sclerotinia Veratri Cash & Davidson, Mycologia 25: 267. 

 1933. 



Sclerotia flat, elliptic, or irregularly elongate, embedded in 

 stems and when infection is severe, diffused over considerable 

 area, dark reddish-brown to black, white within, reaching a 

 length of 3-7 mm. and a width of 1-3 mm. and a thickness of 

 1 mm. 



Apothecia reddish-brown, cupulate at first with inrolled 

 margins, becoming almost flat, usually reaching a diameter of 

 3-7 mm., or occasionally as large as 1 cm., wrinkled when dry; 

 hymenium brown, becoming lighter, grayish-brown at maturity; 

 stem black, swollen toward the base, .5-1 cm. long and .5-1 mm. 

 thick; asci cylindric, attenuated near the base, reaching a length 

 of 140-150 /i and a diameter of 11-13 ju, 8-spored; spores irregu- 

 larly 1 -seriate, oblong-elliptic, simple, hyaline, usually with 

 two oil-drops, 5-6.5 X 15-17.6 n; paraphyses filiform, simple or 

 branched near the base, pale-brown, 2-2.5 fx thick at the apex. 



On Veratrum calif ornicum. 



Type locality: Mesa Lakes Reservoir, Colorado. 



Distribution: Known only from the type locality. 



Illustrations: Mycologia 25: pi. 36, f. 4. 



14. Sclerotinia coloradensis Cash «& Davidson, Mycologia 25: 

 268. 1933. 



Sclerotia on stems and seed-pods, thin, flat, elongated, some- 

 times confluent, black, white within, .2-3 cm. long and 2-5 mm. 

 broad, .5 mm. thick, inconspicuous on weathered material. 



Apothecia one to several from each sclerotium, cup-shaped, 

 becoming flat, margin inrolled when dry, pale-brown, reaching 

 a diameter of 2-3.5 mm.; hymenium pale-brown; stem brown, 

 reaching a length of 4-7 mm. and a diameter of .5 mm.; asci 

 cylindric, short-stipitate, reaching a length of 135-155 and a 

 diameter of 7.5-9.5 ix, 8-spored; spores ellipsoid, hyaline, simple, 

 4-5 X 10-12 ii; paraphrases filiform, septate, simple, 2.5 /x in 

 diameter at their apices. 



On Pedicularis groenlnndica and Pedicularis hracteosa. 



Type locality: Grand Mesa, Colorado. 



Distribution: Known only from the type locality. 



Illustrations: Mycologia 25: pi. 38, f. 12. 



