is an antumn flowering plant, growing by road-sides and in woods,
and preferring damp soil. The curious name refers to the shape
of the root, which ends abruptly as if it had been bitten off.
From a rosette of leaves the stems rise to about two feet high.
The flower-heads, on long stalks, measure roughly an inch across.
Their usual colour is a deep purplish blue, but specimens with
white flowers are sometimes found.