helianthemum
noun
he·li·an·the·mum
ˌhēlēˈan(t)thəməm
1
capitalized : a geus of Eurasian herbs or undershrubs (family Cistaceae) having showy variously colored flowers with fugacious petals
2
plural -s : any plant of the genus Helianthemum
called also rockrose, sunrose
Word History
Etymology
New Latin, from heli- entry 1 + -anthemum