LIST OF ILLUSTRATIONS. 



86. Germinating spore of ^aWiwml?0r&mWs,Pers., x 1000 166 



87. Berries of Mahonia Aquifolium, Lindl., invaded by 



d&ddium Berberidis, Pers., x 5 . . . .167 



88. Spores of Uromyces appendiculatus, Lev., and 



dBcidium Euphorbice-sylvaticce, D.C., germinating 190 



89. Development of teleutospores in Puccinia Rubigo- 



vera, D.C., x 500 192 



90. Teleutospores of Puccinia tragopogonis, Corda, and 



P. sparsa, Ck., x 500 207 



NEW DISEASES OF WHEAT, BARLEY, AND RYE-GRASS. 



91. Upper part of ear of wheat invaded by Fusisporium 



cwZmmm, W.Sm. Natural size .. . . .209 



92. Fusisporium culmorum, "W.Sm., x 400; spore, x 1000 210 



93. Red corns of barley, with. Fusisporium hordei, 



W.Sm., x2 210 



94. Fusisporium hordei, W.Sm., x 400 ; spore, x 1000 . 211 



95. Spike of Lolium perenne, L., invaded by Ergot and 



Fusisporium Lolii, W. Sm. Natural size . . 212 



96. Fusisporium Lolii, W.Sm., x 400 ; spore, 1000 . 213 



ERGOT. Claviceps purpurea, Tul. 



97. Spike of rye, Secale cereale, L.,with Ergots. Natu- 



ral size ........ 215 



98. Ergots from rye and section, x 2; lodiculesof rye, x 5 216 



99. Microscopic structure of Ergot, x 400 . . . 217 



100. Ergot germinating and producing Claviceps pur- 



purea, Tul. Natural size 219 



101. Claviceps purpurea, Tul, x 5, and section through 



upper part, x 20 219 



102. Conceptacle of Claviceps purpurea, Tul., x 200 . 220 



103. Ascus and sporidiurn of Claviceps purpurea, Tul., 



x 500, and 1000 221 



104. Half-grown Ergot crowned with its Sphacelia, x 5 . 224 



105. Microscopic structure of the Sphacelia, x 400 . 225 



106. Sphacelia spore germinating and producing a second 



spore similar with itself, x 1000 .... 226 



