NEW OR NOTEWORTHY PORTO RICAN 



FUNGI 



F. L. Stevens and Nora E. Dalbey 

 (With Plates 2 and 3) 



The following forms were collected by the senior author in 

 Porto Rico. Specimens are deposited as stated in an' article by 

 Esther Young.^ 



Septoriopsis gen. nov. 



Spores long-filamentous ; conidiophores simple, borne on a tu- 

 bercular base. Distinguished from related genera as is indicated 

 in the adjacent key. 



Type species, Septoriopsis Chamaesyceae. 



Septoriopsis Chamaesyceae sp. nov. 



Figs. I, 2 



Spots circular, definite, small, 1-4 mm. in diameter ; centers 

 pale to ashen ; borders red. Sporodochia amphigenous, top- 

 shaped, arising deep within the leaf tissue and erumpent, dark, 

 about 45 /X broad at the top and of slightly greater height from 

 base to top. Conidia like those of Septoria, about 35 \h long, 2 /x 

 thick. 



On Chamaesyce hypericifolia, Trujillo, ^438, Rio Piedras, ^445 

 (type). 



The Tuberculariaceae-Scolecosporiae in the first eighteen vol- 

 umes of Saccardo's " Sylloge Fungorum " contain only the genus 

 ■Schizotrichum, while volume 22 adds Ranojevicia, Linodochiiim, 

 and Volutellopsis. The essential characters separating these 

 genera are shown in the following key : 



Sporodochium setose. Schizotrichum. 

 Sporodochium with a ciliate margin. Volutellopsis. 

 Sporodochium not setose or ciliate-margined. 



Conidiophores dichotomous. Ranojevicia. 



Conidiophores verticillate. Linodochium. 



Conidiophores simple. Septoriopsis. 



1 Mycologia 7 : 143. 1915- 



