DESCRIPTION OF THE PLATE. 



Fig. 1. Penetration of a liypha, arising from an appressorium of the stem form of 

 Collelolrichum falcafum, into a motor cell of the imwounded leaf of 

 sugarcane. The midrib commences immediately on the right of the 

 figui-e. X 350. 



Fig. 2. Penetration of a hypha, arising from an appressorium of the stem form of 

 Colletotrichmn falcafum, into a cell of the thick-walled part of the epi- 

 dermis at the edge of the midrib of the sugarcane leaf. The neighbour- 

 ing central part of the midrib had been wounded by scraping off the 

 outer layers with a sterile knife. X 500. 



Fig. 3. Penetration of an adventitious root on the stem of sugarcane by hyphfp 

 of Colletotrichmn falcatum, through the uninjured epidermis. X 500. 



Fig. 4. Penetration of an underground root of sugarcane by hypha? of Colleiotn- 

 chvm falcafum, through the uninjured epidermis. X 300. 



Fig. 5. Passage of the mycelium of Colletotrichum falcatum from a young inocu- 

 lated adventitious root, of the same series from which fig. 3 was drawn, 

 back to the main stem of the sugarcane. The hyphae enter the vascular 

 tissue and the parenchyma of the stem and spread in all directions. 

 X about 50. 



