1914] Wilson: Anthracnose of Grasses 107 



2. Psilonia apalospora Berk. & Curt. 



This name was given to material issued in exsiccati by Ravenel, on 

 dead stalks of Zea Mays from South Carolina. No diagnosis was given to 

 accompany the specimens. As the specimen at hand had reposed on an 

 unprotected page without an envelope for over half a century the setae 

 were so broken that they could not be measured, but the acervulus has 

 the structure of Colletotrichum cereale. The conidia measure 20 to 23 x 3 

 to 4/x. This is well within the limits of variation of the Colletotrichum in 

 question. Saccardo 2 pointed out the identity of this species with Colleto- 

 trichum lineolum. Other specimens so named were examined on Zea Mays 

 (New Jersey, West Virginia) and on Panicum sanguinale (New Jersey). 

 The former host appears only in the form of dead stalks, while the latter 

 was evidently living material. 



3. Vermicularia culmigena Cooke 



This species was also issued undescribed by Ravenel on Tripsacum 

 dactyloides from South Carolina. The material is a Colletotrichum with 

 conidia and setae well within the limits of size and form of those of C. cereale. 

 Vermicular ia culmigena Desmaz. is a true Vermicularia which is found in 

 Europe on Dactylis and Arrhenatherum. 



4. Vermicularia Hold Sydow 



Described from Germany on Holcus lanatus. Only cotype material 

 was seen. This is a Colletotrichum with very small acervulae and conidia 

 about 19 x 3.5/i. It is certainly not distinct from the species under con- 

 sideration. 



5. Vermicularia Lolii Roum. 



Described from France on Lolium perenne. This a Colletotrichum with 

 conidia showing a much greater range in size than the original description 

 of 22 to 26 x 5.6ju would indicate. While no other material except the co- 

 type was seen the species is certainly not distinct from Colletotrichum 

 cereale. However those mycologists who recognize "microspora" and 

 "macrospora" varieties would probably give it subspecific rank. 



6. Vermicularia Melicae Fuckel 



Described from Europe on Melica uniflora. The original description 

 is not sufficiently explicit to differentiate the species, and as no specimen 



2 Michelia2: 375. 1881. 



