IJST OF ILLUSTRATIONS. 



FIO. 



99. Scrophularia nodosa (after Bentham) . 

 100. Section of /)z]fjV«/M/«;^M;ra (afer Ogle) . 

 loi. Ditto, more advanced 



102. Ditto, still more advanced . 



103. Bartsia odontites {after Bentham) 



104. Ditto. Flower wilh a short pistil (after Miilltr) 



105. Ditto. Flower with a long pistil ,, ,, 



106. Euphrasia officinalis (after Bentham) 



107. Flower of ditto .... 



108. PeiicuiaHs sylvatica (after Ogle) 



109. Lamium album (after Bentham) . 



1 10. Flower of ditto .... 



111. Section of ditto . 



1 12. Salvia officinalis. Section of a young flower (after Ogle) 



113. Ditto, visited by a Bee 



1 14. Ditto, older flower 



115. Stamens in their natural position 



116. Stamens when moved by a bee 



117. Teucrium scorodonia, in the first state 



118. Ditto in the second state .... 



119. Chenopodium bonus-henricns (after Bentham) 



120. Orchis mascula ,, ,, 



121. Side view of flower, with all the petals and sepals cut off 



except the labellum, of which the near half is cut away, 

 as well as the upper portion of the near side of the nectary 

 (after Darwin) .... .... 



122. Front view of flower, ^ith all sepals and petals removed 



except the labellum (after Darwin) 



123. The two poUinia ,, ,,.... 



124. Ophrys apifera (after Bentham) 



125. Cephalanthera gi-andiflora ,, ,, . . 



126. Listera ovata ,, ,, 



127. Flower of Cypripedium longifolium. Front view 

 12S. Ditto. Seen from the side 



129. Side view of Catasetum saccatum, with all the sepals and 



cetals removed except the labelhim (after Darwin) 



130. Section 01 ditto, with all the parts a little expanded „ „ 



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14s 

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150 

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164 



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'74 

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