156 Explanation of the Plates. 



Fio. 



71. Front view of flower of Melampyrv/m pratense L., x 6. The 



lower Kp cut away. 



72. Flower of Gentiana nana Wulf., seen from above, x 5. The 



aperture of the flower is seen to be closed by eight fringed 

 epiblastemes. 



73. Longitudinal section of flower of Symphytum officinale L., 



x2. 



74. Two stamens alternating with two prickly epiblastemes, 



from flower of Symphytum officinale L., x 3. 



75. Lateral view of flower of TelUma grandiflora Lindl., x 2. 



76. Longitudinal section of flower of Soldanella aVpina L., x 2. 



Plate III. 



77. Lateral view of a petal of Nigella elata L., x 5. 



78. Longitudinal section of a petal of Nigella elata L., x 5. 



79. A petal of Nigella satima L., seen from above, x 7. 



80. A petal of Nigella sativa L., robbed of its lid-shaped appen- 



dage, seen from above, x 7. 



81. Longitudinal section of flower of Passiflora vespertiKo L., x 2. 



82. Front view of flower of Cuphea platycentra Planch., x 3. 



83. Longitudinal section of flower of Pa/rnassia palustris L., x 2. 



84. A single nectary from flower of Pa/rtmssia palustris L., seen 



from the side turned towards the ovary, x 2. 



85. Longitudinal section of flower of Coboea scandens Cav. ; natural 



size. 



86. Longitudinal section of the nectar-cavity of flower of Epi- 



lobium amgusUfoUwm L., x 2. The petals cut oflf. 



87. Longitudinal section of flower of Mamillwria gloehidiata 



Mart., X 3. 



88. Longitudinal section of flower of Campan/ula barbata L., x 2. 



89. Stamen from flower of Campanula ba/rbata. The dilated and 



hollowed base of the stamen is seen from the side turned 

 towards the style, x IJ. 



90. Longitudinal section of flower of Potentilla micramthq Eam., 



x5. 



