260 



Mycologia 



with a hand lens ; the lower part of the perithecium subcylindrical 

 and roughened like the stroma, the upper part much smoother, 

 minutely verrucose, dull to shiny ; the apex of the trilobed indi- 

 viduals, subtruncate, umbilicate, and triangular as in C. oreophila, 

 that of bilobed individuals rounded, not angular, slightly swollen 

 above and tapering gradually below, traversed by a prominent 

 suture which crosses the apex and runs down the two broader 

 sides of the flattened upper half of the perithecium to the upper 

 limit of the roughened lower half, or in some cases extending 

 practically to the base of the perithecium; the bilobed perithecium 

 sometimes also encircled in the narrowed central portion by 

 several indistinct transverse wrinkles which give it an ungulate 

 appearnace ; dehiscence of the trilobed individuals as in C. 

 oreophila, the upper half of the perithecium becoming deeply 

 tri-cleft ; dehiscence of the bilobed individuals taking place along 

 the entire length of the furrow, the two halves of the perithecium 

 pulling apart and turning back, exposing the interior of the 

 ascigerous cavity and the lighter colored inner surface of the 

 perithecial wall ; asci not differing in the bilobed and trilobed 

 perithecia, clavate to ovate, 14-25X25-50^ (p. sp.), typically 

 (80% ) 3-spored, the spores borne in a single row or forming a 

 triangular group, approximately 15% of the asci 2-spored, asci 

 containing a larger number of spores uncommon, i-spored asci 

 occasionally found, one ascus containing one normal spore and 

 seven minute, elongated, flattened and probably non-functional 

 spores seen (Figure 42), but an ascus containing eight normal 

 spores not observed; spores 1 o. 5-16.5 /x in diameter (usually 

 12-13. 5/x, imperfectly formed spores more minute, and usually 

 elongated and flattened. 



Parasitic on Podocarpus coriacea near Maricao, Porto Rico. 

 Not known on other hosts, or from other localities. 



In general appearance this species differs markedly from any 

 other in the family on account of the bilobed perithecia. The 

 characters of the asci and spores are practically identical with 

 those of C. jamaicensis. In C. jamaicensis, however, the peri- 

 thecium is typically trilobed, occasionally quadrilobed, very 

 rarely pentilobed, but in no case yet observed bilobed. In C. 

 portoriccnsis it is typically bilobed, occasionally trilobed (11 per 

 cent, of the cases), but in no case yet observed quadrilobed. C. 

 oreophila and C. brasiliensis differ from C. portoricensis both 

 in having typically 8-spored asci and in the form of their peri- 

 thecia. 



