Filaments wholly distinct; calyx free, persistent. [Ebenaceæ], [333]
Filaments in pairs at each sinus; anthers 1-celled. [Caprifoliaceæ], [216]
B. Stamens (fertile ones) as many as the lobes of the corolla and opposite them.
Ovary 5-celled; corolla appendaged with scales inside. [Sapotaceæ], [332]
Ovary 1-celled; pod several–many-seeded; style 1. [Primulaceæ], [328]
Ovary 1-celled; utricle 1-seeded; styles 5. [Plumbaginaceæ], [327]
C. Stamens as many as the lobes of the corolla and alternate with them, or fewer.
1. Ovary adherent to the calyx-tube (inferior).
Tendril-bearing herbs; anthers often united. [Cucurbitaceæ], [194]
Tendrils none.