196 The North American Cup-Fungi 



Type locality: Europe. 



Distribution: New York to Pennsylvania and Colorado; 

 also in Europe. 



Illustrations: Boud. Ic. Myc. pi. 539. 

 Exsiccati: Clements, Crypt. Form. Colo. 524. 



6. Tapesia ribicola Cash, Mycologia 28: 300. 1936. 



Apothecia sessile, superficial, depressed-globose, then patel- 

 late, irregularly contorted when dry, often hysteroid, or triangu- 

 lar, gregarious, soft-fleshy, reaching a diameter of 1.5 mm., 

 externally brownish-black to black and smooth near the base, 

 dull-gray to white and fimbriate at the margin; hymenium light- 

 gray; asci cylindric-clavate, short-stipitate, narrowed at the apex, 

 8-spored, reaching a length of 35-50 /i and a diameter of 4.5-5 n; 

 spores 2-seriate, elongate-ellipsoid to clavate, hyaline, simple, 

 straight, or slightly curved, 1.5-2 X 7-11 fx; paraphyses filiform, 

 hyaline, septate, unbranchcd, not enlarged above. 



On twigs of Rihes montigenum. 



Type locality: Mesa Lakes, Colorado. 



Distribution : Colorado. 



Illustrations: Mycologia 28: 302,/. 3. 



7. Tapesia coloradensis Ellis & Ev. Proc. Acad. Sci. Phila. 



1894:350. 1894. 



Apothecia scattered, or gregarious, sessile, seated on the 

 epidermis or on the surface of the inner bark, surrounded by a 

 thin, brown, subiculum composed of slender, pale-brown, 

 sparingly septate hyphae, reaching a diameter of 1-2 mm., ex- 

 ternally nearly black; hymenium glaucous-white, or livid-white 

 at first, becoming nearly black when dry; asci clavate-cylindric, 

 reaching a length of 45-55 jx and a diameter of 8-10 n, 8-spored; 

 spores ellipsoid, 2-seriate, smoky-hyaline, often slightly curved, 

 2.5-3.5 X 8-11 ij.; paraphyses stout, evanescent. 



On bark of Sambucus melanocarpa. 



Type locality: Cameron Pass, Colorado, elevation 10,000 ft. 



Distribution: Known only from the type locality. 



8. Tapesia lividofusca (Fries) Rehm in Rab. Krypt.-Fl. 1^: 576. 



1891. 



Peziza lividofusca Fries, Syst. Myc. 2: 147. 1822. 



Niptera lividofusca Fuckel, Symb. Myc. Nacht. 2: 58. 1873. 



Mollisia lividofusca Gill. Champ. Fr. Discom. 127. 1882. 



