The Collaborative International Dictionary
Erica cinerea
Heather \Heath"er\ (h[e^][th]"[~e]r; 277. This is the only pronunciation in Scotland), n. [See Heath.] Heath. [Scot.]
Gorse and grass
And heather, where his footsteps pass,
The brighter seem.
--Longfellow.
Heather bell (Bot.), one of the pretty subglobose flowers of two European kinds of heather ( Erica Tetralix, and Erica cinerea).
Wikipedia
Erica cinerea
Erica cinerea (bell heather, or heather-bell) is a species of flowering plant in the heath family Ericaceae, native to western and central Europe.