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Webster 1913 Edition

Noun.

[AS.

stāncropp

A sort of tree.

[Obs.]

Mortimer.

(Bot.)

Any low succulent plant of the genus

Sedum

, esp.

Sedum acre

, which is common on bare rocks in Europe, and is spreading in parts of America. See

Virginian stonecrop

, or

Ditch stonecrop

an American plant (

Penthorum sedoides

stonecrop ‎(plural stonecrops)

Any of various succulent plants of the Crassulaceae family, native to temperate zones, especially in genus Sedum
- 1954, J. R. R. Tolkien, The Two Towers
  A trailing plant with flowers like small white stars had bound itself across the bows as if in reverence for the fallen king, and in the crevices of his stony hair yellow stonecrop gleamed.
Certain plants of genus Lithospermum, in family Boraginaceae.

Sedum