F. J. F. SHAW. 23 



DESCRIPTION OF PLATES. 



Plate I. 



Fig. 1. — Rice plant infected with Sclerolium Oryzfp — note the young shoots 

 groAving out from the base of the infected culm and the outer sheathing leaf 

 covered with sclerotia. x 1. 



Figs. 2, 3. — Young plants inoculated with Sderotiwn Oryzce. In 3 .scle- 

 rotia are forming. x %. 



Fig. 4. — Culture on Lima bean agar. x 1. 



Plate II. 



Fk;. 1. — Rice plant with Sderoliunt Onjztn — note .sclerotia formed within 

 hollow .stem. X *. 



Figs. 2, 3, 4.— Young and old .sclerotia from glucose agar culture. x 50, 



Fig. 5. — Hypha from the edge of glucose agar culture. x 700. 



Fig. 6. — Appendage on hypha. x 700 



Figs. 7, 8. — Appendages borne in peltate fashion. x 7(iO. 



Fig. 9 — Chlamydospores from rice agar culture. x 700. 



Fig 10.— Hypha from rice agar culture breaking up into chlamydospores 

 and single cells. x 700. 



Fig. 11. — Longitudinal .section of leaf showing hyphw in intercellular space 

 and cells bordering on it. x 700. 



Plate III. 



Fig. 1. — Microphotograph. Transverse section of stem of diseased rice plant 

 from Pusa crop. Note two sclerotia present on the inner surface of stem and 

 one small sclerotia in large air cavity. x 50. 



Fig. 2. — Microphotograph. The same showing hyphte in cell.s. The rounded 

 bodiss with dark centres are starch grains, x 170. 



Fig. 3. — Microphotograph. Section through mature scleiotium. x 130. 



