What is the cup of Saintpaulia (whole or with separate sepals)?

Saintpaulia (Usambara violet) is a genus of herbaceous plants of the Gesneriaceae family, and also one of the most common indoor plants.
The stems of Saintpaulia are shortened, with a basal rosette of leaves.
The leaves are covered with villi, leathery, rounded.
Flowers – with five petals, collected in a brush. There are two stamens. Saintpaulia has one pistil with an upper ovary.
Saintpaulia has a calyx consisting of five sepals.



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