| helianthemum | (n) any plant of the genus Helianthemum; vigorous plants of stony alpine meadows and dry scrub regions, Syn. sunrose, sun rose |
| genus helianthemum | (n) widely distributed evergreen or semi-evergreen shrublets; America; Europe and North Africa to Asia Minor and central Asia |
| frostweed | (n) perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts, Syn. Crocanthemum canadense, frost-weed, frostwort, Helianthemum canadense |
| rush rose | (n) woody yellow-flowered perennial of southeastern United States, Syn. Helianthemum scoparium |