Primula florindae

Primula florindae, the Tibetan cowslip or giant cowslip, is a species of flowering plant in the family Primulaceae. It is native to southeastern Tibet, where it grows in huge numbers close to rivers such as the Tsangpo. It is a substantial herbaceous perennial growing to tall by wide. In summer the flower stalks rise from basal rosettes of long leaves. They bear clusters of 20–40 yellow, pendent, bell-like, delicately scented flowers with a mealy white bloom.
The plant was first collected for western horticulture in 1924 by the British botanist Frank Kingdon-Ward, and was named after his wife Florinda.
This plant grows best in very moist conditions as its home is the margins of rivers. It is cold-hardy as long as its roots are not allowed to dry out.
It has gained the Royal [Horticultural Society]'s Award of Garden Merit.