LIST OF ILLUSTRATIONS. XV 



FIG. PAGE 



62 Development of the sporophyte of the Fern . . . 138 



63 Flower of Ranunculus 143 



64 Floral diagram of the Peach 144 



65 Flower of the Cowslip divided longitudinally . . . 146 



66 Nectary of Ranunculus 146 



67 Flower of the Sweet Pea 149 



68 Floral diagram of a papilionaceous flower . . . .150 



69 Standard and one of the wings of the Sweet Pea . . 151 



70 Flower of the Sweet Pea partly dissected so as to show the 



keel, the androacium and the gynoscium . . . .152 



71 Flower of the Wheat 157 



72 Protogynous flower of Plantago lanceolata .... 160 



73 Flower of Silene 162 



74 Florets of Senecio . 164 



75 Floret of Centaurea 166 



76 Flower of the Peach 169 



77 Flower of the Cherry . .169 



78 Flower of Madder (Rubia tinctorum) 170 



79 Flower and fruit of the Gooseberry 171 



80 Longitudinal section through the ovule of Caltha . . 173 



81 Diagrammatic sketch of pollen grains germinating on the 



stigma of (Enothera, the Evening Primrose . . . 175 



82 Embryo of Capsella, the Shepherd's Purse .... 177 



83 Winged seed of a Bignonia 182 



84 Fruit of Dandelion 183 



85 Fruit of the Ash 184 



86 Floral diagram of Sycamore 185 



87 Ovary and style of Sycamore 186 



88 Ripe fruit of Sycamore 187 



89 Fruit of Herb Bennet (Geum urbanum) .... 188 



90 Flower of the Cherry 190 



91 Section through the ovary of the Peach .... 190 



92 Fruit of the Cherry, longitudinally divided . ... 191 



93 Flower and fruit of the Gooseberry , 193 



94 Fruit of the Pear . 194 



