CONTENTS.
xiii
VANDEÆ.
Structure of the column and pollinia—Importance of the elasticity of the pedicel; its power of movement—Elasticity and strength of the caudicles—Calanthe with lateral stigmas, manner of fertilisation—Angræcum sesquipedale, wonderful length of nectary—Species with the entrance into the stigmatic chamber much contracted, so that the pollen-masses can hardly be inserted—Coryanthes, extraordinary manner of fertilisation
Pages 149–177
VANDEÆ continued.—CATASETIDÆ.
Catasetidæ, the most remarkable of all Orchids—The mechanism by which the pollinia of Catasetum are ejected to a distance and are transported by insects—Sensitiveness of the horns of the rostellum—Extraordinary difference in the male, female, and hermaphrodite forms of Catasetum tridentatum—Mormodes ignea, curious structure of the flowers; ejection of the pollinia—Mormodes luxata—Cycnoches ventricosum, manner of fertilisation
178–225
CYPRIPEDEÆ—HOMOLOGIES OF THE FLOWERS OF ORCHIDS.
Cypripedium, differs much from all other Orchids—Labellum in the form of a slipper with two small orifices by which insects can escape—Manner of fertilisation by small bees of the genus Andrena—Homological nature of the several parts of the flowers of the Orchideæ—Wonderful amount of modification which they have undergone
226–246
