Ovary 10-celled; cells 1-ovuled. [Amelanchier], in [Rosaceæ], [166]
Ovary 2–5-celled.
Leaves alternate, with stipules. Pomeæ, in [Rosaceæ], [151]
Leaves opposite, without stipules. Some [Saxifragaceæ], [168]
Leaves alternate, without stipules. [Styracaceæ], [333]
Ovary 1-celled, with the ovules parietal.
Fleshy plants with no true foliage; petals many. [Cactaceæ], [186]
Rough-leaved plants; petals 5 or 10. [Loasaceæ], [193]
Ovary one-celled, with the ovules rising from the base. [Portulacaceæ], [90]
B. Stamens of the same number as the petals and opposite them.