24 SPRING FLOWERS. 



J Ovary inferior, the calyx adhering to the carpels. 



12. Pomaceous plants trees or shrubs, the fruit a pome. 



13. Saxifragaceous plants herbs, the fruit a capsule. 



tt Carpels combined into an undivided ovary, which has 

 more than one placenta. 



{ Ovary superior, the calyx distinct from the carpels. 



14. Rhamnaceous plants shrubs or trees ; calyx-lobes four or 



or five, valvate ; stamens opposite the petals. 



15. Celastraceous plants shrubs or trees ; sepals four or five, 



imbricate ; stamens alternate with the petals. 



16. Portulacaceous plants herbs ; sepals two, imbricate ; pe- 



tals five, cohering at the base. 



** Stamens epigynous. 



17. Grossulariaceous plants shrubs ; flowers regular ; ovary 



inferior, one-celled. 



Monopetals : Dichlamydeous plants, with the petals united 

 (from the base more or less upwards) into a single piece; 

 Orders 18 to 30. 



* Stamens hypogynous. 



18. Ericaceous plants shrubs ; stamens free, equal to or twice 



as many as the lobes of the corolla, the anthers with an ap- 

 pendage, and opening by two pores. 



** Stamens epigynous. 

 t Stamens free, or distinct from the corolla. 



19. Vacciniaceous plants shrubs ; stamens twice as many as 



the lobes of the corolla, the anthers opening by two pores. 



ft Stamens epipetalous, or affixed to the corolla. 

 J Carpels two- or more-celled. 



20. Caprifoliaceous plants shrubs ; leaves opposite, without 



stipules , cells of the carpels many-seeded. 



