d. Ovary with one cell and one

placenta. e. Corolla forming standard, wings and keel; filaments mostly united. _Fabaceae_ 242 e. Corolla not of standard, wings and keel; filaments mostly not united. f. Stamens ten or five; fruit smooth, slender. _Cassiaceae_ 264 f. Stamens three or four; fruit spiny, globose. _Krameriaceae_ 268