527] MELIOLA IN PORTO RICO — STEVENS 59 



On Thriiiax ponceana Cook. 



Guayauilla, July 14, '15, 8590, 8017, July 26, '15, 9074. 

 On Thrinax praeceps Cook. 



Dos Bocas, below Utuado, July 8, '15, 8017. 

 On Macrodiscus lactiflorus (Vahl.) Bur.^ 



Coamo, Apr. 6, '13, 850 a. 



87. Meliola hessii sp. nov. 



Colonies epipliyllous, irregular, orbicular, 2-3 mm. in diam. Cen- 

 ters denuded when old. Mycelium straight, forming a close network 

 of threads, branches mostly opposite, 7/a in diameter. 



Capitate hyphopodia opposite, crowded, about ll/x apart, head cell 

 pyriform, 7 x 10/^,, the basal cell Sjx long. Mucronate hyphopodia oppo- 

 site, bottle-shaped. Perithecial setae none. Mycelial setae erect, rigid, 

 not very numerous, uniformly about 190/1, high, S/x thick. Tip divided 

 dichotomously, once, twice or thrice, into short branches which stand 

 out nearly at right angles to the main stalk. Setal branches about ISju, 

 long. 



Perithecia 150/i, minutely rough. Asci soon evanescent, 4-spored; 

 ascospores 4-septate, brown, slightly constricted, obtuse, 41 x 14//,. 

 On Paullinia pinnata L. Fig. 52. 



Sabana Liana, Aug. 13, '15, 9367 (type). Mayaguez, May 4, '13, 

 1207h. 



Named in honor of Mr. W. E. Hess who collected largely in Porto 

 Rico. 



The species is remarkable for its straight, rigid setae of character- 

 istic branching. Its characters are so marked that it is separated readily 

 by the naked eye from the other species on Paullinia. 



88. Meliola piperis Earle 



Muhlenbergia 1 : July 1901, 12. 

 On Piper adunctum L. 



Dos Bocas, below Utuado, July 7, '15, 7964. Las Marias, July 10, 



^The determinations of the Aleliolas on Palms were all made by Mr. W. E. 

 Pickler, who has made a special study of the variability of the setal tips of 

 M. fur cat a. 



