Ovary 1-locular (1 chamber); corolla tube
without hairs internally; corolla lobes usually not hairy,
but may have a few inconspicuous hairs internally
Monotoca
Ovary 2–5-locular (2-5 chambers); corolla
tube usually with hairs in the throat between the anthers;
corolla lobes with protuberances or sparsely to densely
bearded internally