Pistils numerous but cohering over each other in a solid mass on an elongated receptacle. [Magnoliaceæ], [49]
Pistils numerous, separate, but concealed in a hollow receptacle.
Leaves opposite, entire; no stipules. [Calycanthaceæ], [167]
Leaves alternate, with stipules. [Rosa], in [Rosaceæ], [162]
Pistils several, immersed in hollows of the upper surface of a large top-shaped receptacle. [Nelumbo], in [Nymphæaceæ], [55]
Pistils more than one, separate, not enclosed in the receptacle.
Stamens inserted on the calyx, distinct. [Rosaceæ], [150]
Stamens united with the base of the petals, monadelphous. [Malvaceæ], [96]
Stamens inserted on the receptacle.
Filaments much shorter than the anther; trees. [Anonaceæ], [50]