Lachnella 261 



Apothecia scattered, or gregarious, short-stipitate, at first 

 globose and closed, later becoming expanded, reaching a diam- 

 eter of .3-. 5 mm., entirely white, or becoming brownish with 

 age, clothed externally with white hairs; hymenium plane, or 

 slightly concave; hairs short, not exceeding 50 ^ in length and 

 reaching a diameter of 3-4 ju, hyaline, rarely septate, more or less 

 irregularly curved, or flexuous, the tips obtuse, smooth, or 

 granular; asci clavate, narrowed at the tips, reaching a length of 

 35-45 M and a diameter of 5-6 /x, 8-spored ; spores 2-seriate, hya- 

 line, clavate-cylindrical, 2 X 8-10 m; paraphyses lanceolate- 

 acute at their tips, 3 /x thick. 



On decaying rootstock of Equisetum hyemale, on the ground 

 in wet places. 



Type locality: Europe. 



Distributions: New York and Ontario; also in Europe. 



Our only knowledge of this is from Durand's report in Bull. 

 Torrey Club 29: 464. 1902. 



30. Lachnella pteridicola Seaver, nom. nov. 



Hyalopeziza Pteridis Kanouse, Mycologia 39: 660. 1947. Not Lachnella 

 Pteridis Phil I. 1887. 



Apothecia solitary-, sessile to substipitate, about .2 mm. in 

 diameter, cup-shaped, translucent-white; hairs hyaline-white, 

 rough, reaching a length of 75 ^ and a diameter of 6 n; asci 

 cylindric-clavate, reaching a length of 30-35 m and a diameter 

 of 4.5 IX, 8-spored; spores bacilloid, .75-1 X 4-5.5 jjl; paraphyses 

 filiform. 



On stems of Pteris sp. 



Type locality: Lake Quinault, Washington. 



Distribution: Known only from the type locality. 



31. Lachnella aspidicola (Berk. & Br.) Phill. Brit. Discom. 245- 



1887. 



Peziza aspidicola Berk. & Br. Ann. Mag. Nat. Hist. II. 13: 465. 1854. 

 Mollisia aspidicola yuel. Bull. Soc. Bot. Fr. 26: 234. 1879. 

 Dasyscypha aspidicola Sacc. Syll. Fung. 8: 451. 1889. 

 Helotium aspidicolum Rehm, Hedwigia 20: 35. 1881. 



Apothecia scattered, or gregarious, sessile, or short-stipitate, 

 at first rounded and closed, then expanded and cup-shaped, 

 reaching a diameter of .4 mm. and about the same in height, 

 white-floccose; hymenium white, or yellowish-white; asci clavate, 

 reaching a length of 25-35 ju and a diameter of 5-6 m, 8-spored ; 



