26o Explanation of Plates. 



PLATE XLIX. 



[All Figures x 500 unless otherwise stated. 



TILLETIA INOLENS. 



Fig. 



171. Spores of T. moZews, sectional view .. .. .. .. X 250 



172, 173. Spores of same, surface view . . . . . . . . X 250 



174. Surface view of spore of same, showing bead-like markings on ridge. 



175. View of same, median between surface and sectional. 



176. Surface view of same. 



177. Sectional view of same. 



178. Surface view of spores of T. hold from Sydow's Ustilagineen, Ess. 372. 



179. Sectional view of same. 



