| genus helianthemum | (n) widely distributed evergreen or semi-evergreen shrublets; America; Europe and North Africa to Asia Minor and central Asia |
| helianthemum | (n) any plant of the genus Helianthemum; vigorous plants of stony alpine meadows and dry scrub regions, Syn. sunrose, sun rose |
| maianthemum | (n) sometimes placed in family Convallariaceae: false lily of the valley, Syn. genus Maianthemum |
| polianthes | (n) genus of perennial tuberous herbs having lily-like flowers; Mexico; sometimes placed in family Amaryllidaceae, Syn. genus Polianthes |
| false lily of the valley | (n) small white-flowered plant of western Europe to Japan, Syn. Maianthemum bifolium |
| false lily of the valley | (n) small two-leaved herb of the northern United States and parts of Canada having racemes of small fragrant white flowers, Syn. Maianthemum canadense |
| 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 |
| tuberose | (n) a tuberous Mexican herb having grasslike leaves and cultivated for its spikes of highly fragrant lily-like waxy white flowers, Syn. Polianthes tuberosa |
