Primula rosea
Primula rosea, the rosy primrose, is a flowering plant species in the genus Primula, native to the Himalayas. Growing to  tall, it is a hardy herbaceous perennial with red-tinged leaves and clumps of rich pink flowers in spring. In cultivation it prefers damp places such as the edge of a pond or stream, in moisture-retentive neutral or acid soil and full or partial sunlight. It has won the Royal Horticultural Society's Award of Garden Merit. Rosinidin is an anthocyanidin found in P. rosea. References

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rosea
Plants described in 1834