Porto Rioo. — On dead cane stallis, Rio Piedras, March.. 1911, 

 4010. Very commonly observed when studying other forms,, inter- 

 mixed sparingly with them. (PL XXIX, fig. 11.) 



Verticicladium gTaminicolum Johnston & Stevenson sp. uov. 



Effuse, forming a uniform layer over the substratum, separating 

 readily, dull brown to gray ; sterile hyphae interwoven into a fairly 

 compact net work, fertile hyph?e erect to reclining, ])rown, regular, 

 verticillate branched, 3-4 branches at each node ; branches cylindrical, 

 short ; spores eliptical to cylindrical, hyaline, 3-4 X 6.8-11 mu. 



Porto Rico. — On cane leaves, Rio Piedras, Sept., 1912, 4596, Feb., 



1914, 1645 (type). (PI. XXIX, fig. 14, 15.) 



Graphit'm sacchari Speg. 



Porto Rico. — On dead cane stalk, Rio Piedras, March, 1911, 4010, 

 Sept., 1912, 4621, Jan., 1914, 1180, Dec, 1916, 5858; Juneos, July 



1915, 2925. Quite common. (PI. XXXI, fig. 13-15.) 



Myrothecium verrucaria (A«&S) Dtm. 



Porto Rioo. — On dead and dying cane leaf-sheaths, Rio Piedras, 

 April, 1917, 6423. Sporodochia small, flat, dark purple to black 

 with a white, villous margin. 



Spegazzinia ornat,a Sacc. 



Porto Rico. — On dead cane leaves, Rio Piedras, Nov., 1911, 4079, 

 Dec, 1911, 4108, April, 1912, 4311, 4318, July, 1912, 4490, Sept., 1915, 

 3072, June, 1917, 6551; Ponce, Jan., 1912, 4154; Sta. Isabel, Jan., 

 1912, 4164. Also collected on dead liamboo. pineapple leaves, and 

 dead leaves of various weed grasses. Very common everywhere. 

 First determination by Mrs. F. W. Patterson. (PI. XXIX, fig. 6, 7 ; 

 pi. XXIV, fig. 3.) 



The sporodochia are jet black, flat, subhemispherical to irregular, 

 and several mm. in diameter. 



Tubercularia saccharicola Speg. 



Porto Rico.— On dead cane stalks, Rio Piedras, Aug., 1912, 4667, 

 Jan., 1914, 1214, Feb., 1914, 1340; Carolina, Jan., 1915, 2522; Las 

 I\ronjas, Apr., 1911, 4049. First determination by Mrs. F. W. Patter- 

 son. (PI. XXTTI, fig. 3: pi. XXVTT. fig. 5-7.) 



226 



