DESCRIPTION OP PLATES. Xll! 



FTO PAGE 



80. Beaded hair of sow-thistle 41 



81. Glandular hair from leaf of common tobacco 41 



82. Hair from leaf of garden chrysanthemum 41 



83. Rosette-shaped glandular hair from flower of verbena 41 



84. Stellate hairs from the hollyhock (Althcea rosea).* 41 



85. a. Stellate hair from leaf of lavender 41 



85, 6. Hair from leaf of garden verbena, with warty 



surface 41 



86. Hair from leaf of white poplar (Populus alba) .... 41 



87. Base of a hair on a mass of cellular tissue 41 



88, a. A sting from common nettle 42 



88, 6. Portion of a leaf of Yalisneria 42 



PLATE IV. to face page 48. 



89. Pcdmella cruentagory dew 48 



90. Yeast plant 48 



91 . Portions of vinegar plant 48 



92. So-called cholera fungus obtained from the air. ... 48 



93. Red rust of wheat 49 



94. Puccinia graminis mildew 49 



95. Penicillium glaucum common mould 49 



96. Botrytis from mouldy grape 49 



97. Fungus from mouldy bread (Mucor Mwedo) .... 49 



98. Fungus from human ear 49 



99. Fungus from leaf of bramble (Phragmidium 6t* 



bosum) 49 



100. Vine blight (Oidium Tuclcerfy ., 50 



101. Potato blight (Botrytis infestans) ,.*... 50 



102. a. Pea blight (Erysiphe Pisi) 50 



ft. Asci and sporidia of pea blight 50 



103. Fungus from a decayed Spanish nut 50 





