310 The North American Cup-Fungi 



extended base, 8-spored; spores 1-seriate, broad-ellipsoid, very 

 granular within, at first hyaline, becoming dark-brown, 20 X 

 26 ju; paraphyses very slender, hyaline, about 2 n thick. 



Apotheciis erumpentibus, extus albido-furfuraceis, primo clausis dein 

 apertis; hymenio nigro; ascis subcylindraceis, 8-sporis, 20-26 X 240 fi; sporis 

 ellipsoideis, brunneis, 20 X 26 ju; paraphysibus filiformibus, 2 fx diam. 



On branches of Tilia heterophylla. 



Type locality: Agricultural College Campus, Athens, 

 Georgia. 



Distribution: Known only from the type locality. 



6. CENANGELLA Sacc. Bot. Cent. 18: 248. 1884; Syll. Fung. 



8:587. 1889. 



Apothecia erumpent, urceolate to patellate, dark-colored, 

 brown, or black, coriaceous; asci clavate, 4-8-spored; spores 

 ellipsoid to fusoid, definitely 1 -septate, hyaline; paraphyses 

 filiform to clavate. 



Type species, Tympanis Ravenelii Berk. 



This genus was established by Saccardo in 1884 including 

 two species Cenangium Fraxini Tub, based on Tympanis Fraxini 

 Fries, which was based on Peziza Fraxini Schw. and Cenan- 

 gium dolosum Sacc. The first, which would be the type, was 

 apparently included through a misconception of the Schweinitz 

 species since the spores do not agree at all with the above descrip- 

 tion (see Rehm, Ann. M^c. 11: 166). The second is poorly 

 known and we, therefore, suggest as the type of the genus 

 Tympanis Ravenelii Berk, which was treated by Saccardo as 

 Cenangella Ravenelii in 1889. 



Spores very large, 14 X 40 /x. 1. C. Ravenelii. 



Spores relatively small 3-4 X 12-15 //. 2. C. oricostala. 



1. Cenangella Ravenelii (Berk.) Sacc. Syll. Fung. 8: 589. 1889. 

 Tympanis Ravenelii Berk. Grevillea 4: 3. 1875. 



Apothecia erumpent, single, or several together, dark-brown 

 to black, scarcely exceeding 1 mm. in diameter; hymenium at 

 first concave, becoming nearly plane; asci very broad-clavate, 

 reaching a length of 130 /x and a diameter of 30-35 /x, tapering 

 abruptly below, 8-spored; spores irregularly 2-seriate, ellipsoid, 

 or fusoid, 1 -septate and strongly constricted at the septum, 

 densely filled with coarse granules, 14 X 40 n, hyaline; paraphy- 

 ses stout, reaching a diameter of 5-6 /x at their apices. 



