Chardon : Pyrenomycetes of Porto Rico 285 



Material examined: 



On dead bark and twigs. Porto Rican Fungi (Fink), No. 1 135, 

 Mayaguez, Dec. 21, 1915; Cornell University Explorations of 

 Porto Rico (Whetzel & Olive), Maricao, Mar. 23, 1916, deposited 

 in Chardon herbarium as No, 742; id. id. (Chardon), No. 888, 

 Penuelas, July 20, 1920. 



Creonectria rubicarpa (Cooke) Seaver, Mycol. 1 : 187. 1909. 



Nectria rubicarpa Cooke, Grevillea 7: 50. 1878. 



The material examined, although scant, seems to agree with this 

 species except in one character : the arrangement of the perithecia 

 in cespitose clusters is not pronounced. Most of them are gre- 

 garious. The spores measure 10. 5-12 x 5-6 fx. 



Material ex am ined : 



On a log. Porto Rican Fungi (Fink), No. 215, Rio Piedras, 

 Jan. 18, 1916; Cornell University Explorations of Porto Rico 

 (Chardon), No. 889, Mayaguez, July 14, 1920. 



Ophionectria portoricensis sp. nov. 



Perithecia densely gregarious, cylindrical to subcorneal, slightly 

 tapering above, 500-800 /a high, 250 il in lateral diameter, scarlet, 

 covered irregularly with a mealy substance which gives a warty 

 appearance, naked toward the apex, possessing a distinct ostiolum, 

 15 [a in diam. ; asci subcylindrical, tapering above and below, 217- 

 274 x 22.5-28 Li, 8-spored, the ascus wall evanescent; spores fili- 

 form, curved, slightly tapering toward each end, contents hyaline 

 and granular, 13-27 septate, 153-221 x 6-7.5 paraphyses in- 

 distinct. 



A very distinct and characteristic species on account of the un- 

 usually large spores and asci (fig. 10). 



Material examined : 



On a log. Cornell University Explorations of Porto Rico 

 (Whetzel & Olive), Mayaguez, Mar. 13, 1916, deposited in Cornell 

 University Department of Plant Pathology herbarium as No. 

 1 1 129 (type). 



