I
Any flowering plant of the genus Primula , one of 28 genera of the family Primulaceae.
Primula includes more than 500 species, which occur chiefly in the Northern Hemisphere in cool or mountainous regions. The plants are low-growing, usually perennial herbs; a few are biennials. Most species grow 25–50 cm (10–20 inches) tall, but some are as short as 5 cm and others as tall as 120 cm. Many species are cultivated for their attractive, five-petaled flowers, which may be red, pink, purple, blue, white, or yellow. Other plants in the primrose family include evening primrose (family Onagraceae) is not a true primrose.
II
[c mediumvioletred] (as used in expressions)
evening primrose
{{link=Rosebery Archibald Philip Primrose 5th earl of">Rosebery Archibald Philip Primrose 5th earl of
Archibald Philip Primrose