The Different Forms of Plants and Flowers

Contents: 1. Introduction. 2. Heterostyled dimorphic plants: primulaceae. 3. Hybrid primulas. 4. Heterostyled dimorphic plants. 5. Heterostyled trimorphic plants. 6. Illegitimate offspring of heterostyled plants. 7. Concluding remarks on heterostyled plants. 8. Polygamous, dioecious, and gynodioecious plants. 9. Cleistogamic flowers.

From the Introduction: "The subject of the present volume, namely the differently formed flowers normally produced by certain kinds of plants, either on the same stock or on distinct stocks, ought to have been treated by a professed botanist. As far as the sexual relations of flowers are concerned, linnaeus long ago divided them into hermaphrodite, monoecious, dioecious, and polygamous species. This fundamental distinction, with the aid of several subdivisions in each of the four classes, will serve my purpose; but the classification is artificial, and the groups often pass into one another."