124 The North American Cup-Fungi 



1. Humarina axillaris (Nees) Seaver, comb. nov. 



Peziza axillaris Nees, Syst. Pilze 258. 1817. 

 Leucoloma axillaris Fuckel, Symb. Myc. 318. 1869. 

 Humaria axillaris Sacc. Syll. Fung. 8: 130. 1889. 

 Helotium axillaris Boud. Hist. Class. Discom. Eu. 114. 1907. 



Apothecia sessile, subglobose, becoming slightly depressed, 

 reaching a diameter of 1 mm., externally pale-orange, surrounded 

 at the base by coarse mycelium which attaches the apothecia to 

 the moss plants on which they grow; hymenium plane or nearly 

 so, a little darker than the outside of the apothecium; asci 

 cylindric above, narrowed below into a stem-like base, 8-spored; 

 spores obliquely 1-seriate, hyaline, smooth, ellipsoid, containing 

 one or two large oil-drops, 7-10 X 17-24 ^u; paraphyses numerous, 

 slender, slightly enlarged above. 



Growing from the axils of leaves of mosses. 



Type locality: Europe. 



Distribution: Colorado; also in Europe. 



Illustrations: Nees, Syst. Pilze pi. 37, f. 267; Cooke, 

 Mycographia pi. 23, f. 91. 



ExsiCCATi: Clements, Crypt. Form. Colo. 112. 



2. Humarina ithacaensis (Rehm) Seaver, comb. nov. 

 Humaria ithacaensis Rehm, Ann. Myc. 2: 35. 1904. 



Apothecia scattered, sessile, at first globose and closed, then 

 cup-shaped, finally expanded, flesh-red, reaching a diameter of 

 0.5-1 mm., smooth, attached to the substratum by a coarse 

 white mycelium; hymenium becoming plane or slightly convex; 

 asci cylindric, reaching a length of 150-180 /x and a diameter of 

 15^1, 8-spored; spores 1-seriate, ellipsoid, containing two large 

 oil-drops, hyaline, 8-9 X 15-17 ix, becoming minutely sculptured; 

 spore-sculpturing consisting of minute warts; paraphyses filiform, 

 septate, hyaline, 3 ^ in diameter below, enlarged above, reaching 

 a diameter of 4 ^u at their apices. 



On the living thallus of Alarchantia polymorpha. 



Type locality: Ithaca, New York. 



Distribution: Known only from the type locality. 



3. Humarina pallens (Boud.) Seaver, comb. nov. 



Ascophanus pallens Boud. Bull. Soc. Myc. Fr. 4: XLVIII. 1888. 



Apothecia gregarious but not crowded, at first subglobose, 

 expanding and becoming discoid or subdiscoid, entirely white or 



