8 The North American Cup-Fungi 



Spores long-elliptic to cylindric, S-man^'-sep- 

 tate when mature. 

 Ascophores bright-colored. 2. MiCROGLOSSUM. 



Ascophores black or blackish. 



Spores hyaline. 3. Corynetes. 



Spores fuliginous, or brown. 



Hymeniuni without spines or setae. 



Apothecia viscid. 4. Gloeoglossum. 



Apothecia not viscid. 5. Geoglossum. 



Hymenium beset with spines or setae. 6. Trichoglossum. 

 Spathulate or fan-shaped, ascigerous portion de- 

 current on opposite sides of the stem. 7. Spathularia. 

 Ascophores stipitate, piieate. 



Spores ellipsoid-fusiform; ascophore gelatinous. 8. Leotia. 



Spores filiform, or filiform-clavate. 



Ascophores fleshy-gelatinous; asci very narrow; 

 spores filiform; plants aquatic or semi- 

 aquatic. 9. Vihrissea. 

 Ascophores fleshy-leathery; asci broadly cla- 

 vate; spores filiform-clavate; plants terres- 

 trial. 10. CUDONIA. 



Note. The treatment of the Geoglossaceae is based on 

 Durand's monograph (Ann. M\c. 6: 388-482. 1908.) with addi- 

 tions and such alterations as seemed necessary to make it con- 

 form with the style of the present work. While the nomencla- 

 ture does not in some cases conform to the present international 

 rules, the writer does not feel justified in diverging from his 

 conclusions. 



1. MITRULA Pers. Neues Mag. Bot. 1: 116. 1794. 



Heyderia (Fries) Bond. Bull. Soc. Myc. Fr. 1: 110. 1885. Not C. Koch 1873. 

 Microglossum Boud. Bull. Soc. Myc. Fr. 1: 110. 1885. Not Gill. 1879. 



Ascophores fleshy, erect, stipitate, clavate, the hymenium 

 covering only the upper portion, or the ascigerous portion ellip- 

 soid to subglobose, usually sharply delimited from the stem and 

 often slightly free from it below, bright-colored (usually yellow 

 or brownish); asci clavate-cylindric, opening by a pore, 8-spored; 

 spores 1-seriate, or 2-seriate in the ascus, ellipsoid to narrowly 

 fusiform, hyaline, continuous, or rarely 1 -septate when mature; 

 paraphyses present or absent. 



Type species, Mitrula Heyderi Pers, 



