/ 



LIST OF PLATES 



60. The bristle represents the tongue of an insect 



being inserted in the tube of the nectary — 

 The bristle being withdrawn. Observe the 

 two tiny clubs now upon it . , . Facing 



61. Magnified view of the pollen clubs . 



62. Quake-grass with unopened spikelets 



63. Quake -grass with opened spikelets and 



stamens protruding 



64. Flower from a spikelet of Quake-grass showing 



the ,two feathery stigmas, three stamens, 

 and covering scales magnified 



65. White or Dutch Clover 



66. Development of a flower-head of Clover as the 



florets are fertilised by the visiting bees 



67. The Orpine, or Livelong 



68. Wall-Pepper — Wall-Pepper growing on a roof 

 6g. Branches of Orpine and Mock Orange exposed 



to daylight and without water — Half an hour 

 later the Mock Orange has half collapsed . 



70. Six hours later, the Orpine is still fresh — The 



Orpine beginning to flag twenty-six hours later 



71. Daffodils 



72. Meadow and Bulbous Buttercups . 



73. Roots of the Meadow and Bulbous Buttercups 



74. Water Buttercup with aquatic and aerial 



leaves 



75. Clematis 



76. Columbine-leaved Meadow Rue 



77. Columbine — Larkspur , 



78. Monkshood flowers and their nectaries 



79. Foxgloves 



80. Honeysuckle or Woodbine 



81. Wild Angelica .... 



82. Cornflowers 



83. White Water Lily .... 



84. Fructification of Pteris, Davallia, and Poly- 



stichum 



85. Germinating Ferns — Hart's-tongue Ferns 



growing from between bricks of a wall 



86. The Prothallus produced from the Fern Spore 



XX 



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