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Webster 1913 Edition

Noun.

(Bot.)

A name given to any species of the genus

Helianthemum

, low shrubs or herbs with yellow flowers, especially the European

Helianthemum vulgare

and the American frostweed,

Helianthemum Canadense

Cretan rockrose

a related shrub (

Cistus Creticus

), one of the plants yielding the fragrant gum called

ladanum

Helianthemum nummularium

rockrose ‎(plural rockroses)

Helianthum