Noun: frostwort
- 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
"The frostwort's unusual ice formations make it a curiosity in late autumn";
- frostweed, frost-weed, Helianthemum canadense, Crocanthemum canadense
Derived forms: frostworts
Type of: helianthemum, sun rose, sunrose