Red Clover
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Trifolium pratense
Common & widespread in Britain.
The flowers are dark pink with a paler base, 12–15 mm (1⁄2–5⁄8 in) long, produced in a dense inflorescence.
In individual flowers, sepals are fused from the base into a hairy calyx tube with 5 teeth.
The typical family 5 petals (standard, 2 wings and 2 keel) are also joined together at the base, and are up to 3 times longer than the calyx.
The upper of the 10 stamens is free, with the filaments of the 9 other joined into a tube surrounding the style.
They are mostly visited by Bumblebees.
Flowers from May-October.