248 The North American Cup-Fungi 



Peziza Agassizii Berk. & Curt.; Cooke & Peck, Grevillea 1: 5. 1872. 

 Peziza subtilissima Cooke, Grevillea 3: 121. 1875. 

 Helotium calyciforme Wettstein, Bot. Cent. 31: 319. 1887. 

 Lachnella subtilissima Phill. Brit. Discom. 244. 1887. 

 Dasyscypha subtilissima Sacc. Syll. Fung. 8: 438. 1889. 

 Dasyscypha Agassizii Sacc. Syll. Fung. 8: 438. 1889. 

 Dasyscypha incarnata Clements, Bull. Torrey Club 30: 88. 1903. 



Apothecia gregarious, short-stipitate, at first subglobose, 

 becoming expanded and shallow cup-shaped, or nearly plane, 

 externally clothed with flexuose, white hairs; hymenium bright 

 orange-yellow, fringed about with marginal hairs, reaching a 

 diameter of 4 mm., but often much smaller; hairs hyaline, white 

 to the unaided eye, blunt, or attenuated, externally covered with 

 coarse granules, reaching a length of 100 /x and a diameter of 

 2-3 /x; asci cylindric or subcylindric, reaching a length of 60 95 /i 

 and a diameter of 3-4 yu; spores 1- or 2-seriate, narrow-ellipsoid, 

 hyaline, 3-4 X 6-10 /x; paraphyses clavate, reaching a diameter 

 of 2-5 n at their apices. 



On bark and wood of conifers, Abies balsamea, Picea Mariana, 

 Picea rubra, Pinus monticola, Pinus Strobiis, Pseudotsuga taxi- 

 folia and Tsuga canadensis. 



Type locality: Lake Superior region (Calumet). 



Distribution: Labrador to Pennsylvania, Montana and 

 Colorado. Probably widely distributed in subboreal regions; 

 ? also in Europe. 



Illustrations: Hedw. Descr. 2: pi. 22, B; Grevillea 3: pi. 40, 

 f. 169; Mycologia 21 : pi. 20; 35: 107, /. 2. 



ExsiCCATi: Ellis, N. Am. Fungi 1311; Barth. Fungi Columb. 

 4530; Clements, Crypt. Form. Colo. 82; W. B. Cooke, Mycobiota 

 N. Am. 67. Rehm, Ascom. 1854 (from Wisconsin). 



Bingham and Ehrlich after an exhaustive study (Mycologia 

 35 : 95-1 11. 1 943) consider Dasyscypha Agassizii as distinct from 

 Peziza calyciformis Willd. of Europe, the differences based largely 

 on spore measurements. The differences are so slight that it 

 seems to the writer a question whether or not they should be 

 separated. 



9. Lachnella Ellisiana (Rehm) Seaver, comb. nov. 



Peziza Ellisiana Rehm, Grevillea 4: 169. 1876. 

 Dasyscypha Ellisiana Sacc. Syll. Fung. 8: 459. 1889. 



Imperfect stage abundant, yellowish-green, minute, consisting 

 of an erumpent stroma, 106-132 /x diam., at first closed, then 

 opening up with a single exposed chamber, or compound, with 



