254 The North American Cup-Fungi 



Illustrations: Hedw. (fil.) Obs. Bot. pi. 8,f. B; Sow. Engl. 

 Fungi, pi. 65; Gill Champ. Fr. Discom. pi. 59, f. 1-2; Bull. Lab. 

 Nat. Hist. State Univ. Iowa 6: pi. 25, f. 3 (except paraphysis). 



ExsiccATi: Ellis, N. Am. Fungi 387; Ellis «& Ev, N. Am. 

 Fungi, 2912; Fungi Columb. 19, 2015. 



This is a species concerning which there has been much con- 

 fusion. Phillips in his British Discomycetes regards L. niveum 

 and L. virgineum as distinct species and states that the latter can 

 be distinguished from the former by its lanceolate paraphyses. 

 Rehm treats them as distinct but assigns lanceolate paraphyses 

 to both and seemed to know nothing of L. niveum as diagnosed 

 by Phillips. Gillet in his Discomycetes of France treats them as 

 distinct and attempts to draw a slight difference in the form of 

 the cups or length of the hairs. 



In his early work on the Discomycetes the writer encountered 

 this species and figured it with clavate paraphyses which may 

 have been due to faulty observation, for in going over all of the 

 specimens in the herbarium of The New York Botanical Garden 

 listed under these two names, he finds that all of them have 

 lanceolate paraphyses. Since none of the diagnostic characters 

 used by European authors, in separating these two species 

 appear to have any particular value, they are here combined. 

 One specimen examined seems to show two kinds paraphyses, 

 lanceolate and filiform. 



17. Lachnella capitata (Peck) Seaver, comb. nov. 



?Peziza crystallina Fuckel, Symb. Myc. 306. 1869. 

 Peziza capitata Peck, Ann. Rep. N. Y. State Mus. 30: 60. 1878. 

 Trichopeziza capitata Sacc. Syll. Fung. 8: 417. 1889. 

 ?Dasyscypha crystallina Sacc. Syll. Fung. 8: 440. 1889. 

 ?Dasyscypha scintillans Massee, Brit. Fungus-Fl. 4: 328. 1895. 

 Dasyscypha capitata Kanouse, Mycologia 39: 646. 1947. 



Apothecia very minute, sessile, at first globose and closed, 

 finally expanding, externally clothed with a dense coat of white 

 hairs; hymenium white, or yellowish; hairs hyaline with trans- 

 mitted light, often terminated with a crystalline cap; asci cy- 

 lindric, or subcylindric, reaching a length of 30 )u; spores cylindric, 

 slender 5-7 /x long; paraphyses thick, longer than the asci, 

 lanceolate. 



On leaves of Quercus. 



Type locality: Albany, New York, type on Quercus alba. 



