216 The North American Cup-Fungi 



Descr. pi. 5, A; Phill. Brit. Discom. pi. 2, f. 10; Rab. Krypt.- 

 Fl. l"': 1136, f. 1-4; Schaeff. Fung. Bavar. pi. 153. 

 ExsiccATi: N. Am. Fungi 2739. 



Doubtful Species 



• Rhizina spongiosa Berk. & Curt.; Berk. Jour. Linn. Soc. 10: 364. 1869. 

 Described as one and one-half inches in diameter with spores 20 X 60 ^t. 

 Growing vertically on bushes. 



37. DISCINA Fries, Summa Veg. Scand. 348. 1849. 



Apothecia medium to large, sessile or short-stipitate, fleshy 

 or waxy, light- or dark-colored; asci cylindric or subcylindric, 

 very long, usually showing a tendency to become spirally twisted ; 

 spores ellipsoid, appendiculate and often sculptured, hyaline or 

 faintly colored; spore appendages apiculate or truncate; pa- 

 raphyses rather stout. 



Type species, Discina perlata Fries. 

 Apothecia dark-colored; spore appendages apiculate. 



Apothecia large, 6-7 cm. or more in diameter. 1. D. ancilis. 



Apothecia medium sized, not exceeding 5 cm. in di- 

 ameter. 2. D. apiculata. 

 Apothecia bright-colored; spore appendages truncate. 



Hymenium strongly convolute. 3. D. convoluta. 



Hymenium even or only slightly undulated. 4. D. leucoxantha. 



1. Discina ancilis (Pers.) Sacc. Syll. Fung. 8: 103. 1899. 

 (Plate 28, fig. 2.) 



Peziza ancilis Pers. Myc. Eu. 1: 219. 1822. 

 Peziza perlata Fries, Syst. Myc. 2: 43. 1822. 

 Discina perlata Fries, Summa Veg. Scand. 348. 1849. 

 Rhizina helvetica Fuckel, Symb. Myc. Nacht. 2: 66. 1873. 

 Peziza Warnei Peck, Ann. Rep. N. Y. State Mus. 30: 59. 1878. 

 Aleuria ancilis Gill. Champ. Fr. Discom. 36. 1879. 

 Acetabula ancilis Lamb. Fl. Myc. Belg. 2: 573. 1880. 

 Discitia Warnei Sacc. Syll. Fung. 8: 102. 1889. 

 Discina ancilis Sacc. Syll. Fung. 8: 103. 1889. 

 Discina helvetica Sacc. Syll. Fung. 8: 103. 1889. 



Apothecia gregarious or scattered, moie rarely congested, 

 short-stipitate, at first subglobose, soon becoming discoid, finally 

 repand, at first regular in form, becoming irregular and often 

 angular as the margin rolls back, externally whitish or pallid, 

 reaching a diameter of 7-8 cm., or in rare cases as large as 

 20-25 cm.; hymenium uneven, often beautifully veined or con- 

 volute, plane or convex, usually umbilicate, dark-brown, finally 



