frostflower

[ frawst-flou-er, frost- ]
/ ˈfrɔstˌflaʊ ər, ˈfrɒst- /

noun

a plant, Milla biflora, of the amaryllis family, native to the southwestern U.S. and Mexico.
its waxy-white, starlike flower.
any aster.
Also called Mexican star (for defs 1, 2).

Origin of frostflower

An Americanism dating back to 1825–35; frost + flower