252 BOTANICAL GAZETTE [march 



with rounded surface, scattered and separate or clustered and 



confluent. Diseased area extending through the leaf, brown 

 below. Stroma developing between epid 



rmis 



often 300 /x thick. Locules irregular in shape, often 500-600^ 

 wide, basal layer hyaline, thin, lateral walls brown, thick; clypeus 

 black, 60-100 fi thick. Asci numerous, 8-spored, saccate, thin- 

 walled. Spores inordinate, cylindrical, 28-43X12-14 /j, hyaline, 

 continuous. 



On Thrinax ponceana, Vega Baja, 7716 (type). 



Catacauma urbanianum (A. and H.) Th. and Syd. (fig. 13). 



■ 



On Calyptranthes Krugii: El Yunque, 8243; Maricao, 3677, 374°- 

 What appears to be the same fungus, although usually hypophyllous 

 and showing a concentric arrangement of stromata, occurs on an unknown 

 Myrtaceous host, no. 5766, San German. Another specimen from Monte 

 Alegrillo, 4526, shows the characteristic acervuli and spores, but is mainly 

 conidial. The Septoria-like conidia are borne in very large cavities in the 

 stromata. The ascospores in these specimens are slightly longer (17-20 fx) 

 and slightly thinner (5 p) than called for by description. 



Catacaumella Gouaniae, sp. nov. (figs. 14, 15). — Mainly epi- 

 phyllous, rarely hypophyllous. Spots barely exceeding the stro- 

 mata, hardly visible below. Stromata abundant, roughly circular, 

 2-3 mm. in diameter, raised, wrinkled, shining black, developing 



between the 



ermis 



cells and made up of 



Loculi large, flat, 



parallel cells perpendicular to the leaf surface. 

 500 // wide, about 150-160 /z deep, single or few in each stroma. 

 Ostiole very large and distinct. Asci thin-walled, irregular, 

 8-spored, 61-68X10-11 /x, inordinate. Spores hyaline, i-celled, 

 ovoid or pyriform, irregular, 14-20X10/X. Paraphyses none. 



On Gouania polygana: Mayaguez, 3923 (type), 1049; Salinas, 6798; 

 Dos Bocas, 6007, 8092; Maricao, 8953; on Gouania lupuloides, Arecibo-Lares 

 road, 7230. 



The last specimen shows the stromata smaller and more abundant upon 

 the lower surface than is the case with the other specimens. 



Phaeodothopsis Eupatorii, sp. nov. (figs. 16, 17). — Spot not 

 exceeding the clypeus. Stromata numerous, circular, 1-4 mm. 

 in diameter, black, rough with perithecia, almost exclusively 

 epiphyllous; developing first in the epidermis, producing an 



