177] ■ PARASITIC FUNGI— STEVENS 11 



On leaves of palm, species indet. 



Trinidad: Cumuto, August 16, 1922, 1001. 



The genus Coccostrompopsis differs from Coccostroma by having para- 

 physes; and from Auerswaldiella by having hyaline spores. The species 

 described is somewhat similar to Coccostroma palmigenum (Berk, and Curt.) 

 Theissen and Sydow- except for the presence of paraphyses. In the de- 

 scription of Botryosphaeria palniigena Berk, and Curt, cited by Theissen 

 and Sydow was a synonym of Coccostroma palmigenum, paraphyses are de- 

 scribed as being present. If this is true that fungus should not have been 

 placed in the genus Coccostroma. The present species differs from that 

 described as Botryosphaeria palmigena Berk, and Curt, in the size of spores 

 and asci and in the absence of 4 and 6- spored asci. The presence of the 

 paraphyses prevents the present species from being placed in Coccostroma 

 and the hyaline spores keep it out of Auerswaldiella. I am inclined to 

 believe that the material is not the same as that described as Coccostroma 

 palmigenum (Berk, and Curt.) Theiss. and Syd. and, therefore, erect the 

 new genus Coccostromopsis. 



NowELLiA Stevens n. gen. 

 Stroma Dothideaceous, superficial, centrally fastened to the hypostroma. 

 Perithecia globular on the stroma. Asci with numerous paraphyses. 

 Spores hyaline, 1-septate. Named in honor of W. Nowell of Trinidad in 

 recognition of his researches on fungi. 



3. NowELLiA GUiANENSis Stevens n. sp. 

 [Figures 7 to 14, 93.] 



Superficial subiculum flat, thin, irregularly but distinctly radiate, with- 

 out free mycelium, margin erose, Ito 3 mm., sometimes larger, in diameter, 

 amphigenous but more abundant below. Stroma thick, centrally fastened 

 to the hypostroma. Perithecia about 460ju high and almost equal diameter, 

 globular, surface smooth or slightly rough, astomous and irregularly cracked, 

 few (3 to 10) to many (100) on one subicle. Asci 90 to 100 x 11m, clavate. 

 Paraphyses numerous, filiform, gelatinous. Spores hyaline, l-septate, en- 

 closed in a gelatinous envelope, 22 x 55/x exclusive of the gelatinous ea- 

 velope, thickest in the middle and tapering slightly toward the ends. 



On unknown plant of the Celastraceae. 



British Guiana: Demerara-Essequibo R. R., July 15, 1922, 357. 



Study of this fungus of different ages shows that the hypostroma first 

 develops quite extensively in the palisade and mesophyll, then breaks 

 through the cuticle and grows outward forming a thin, flat, smooth, 

 approximately circular disk of truly radiate, i. e. Microthyriaceous char- 

 acter. The edge of the subicular disk is quite unevenly erose (Figure 10) 



•Ann. Myc, 13:272. I.e. 



