Butter flower

the buttercup, a yellow flower.

See also: Butter

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The butter flower and parmesan are meant to be mixed in the risotto by the guest, just before partaking it.
McDowell of Minneapolis supplied "some very pretty ornamental work" including flowers, vines, a bas-relief cow and a butter churn for the Minnesota section, Ruth Woodruff created a garden of butter flowers for Illinois, and Laura Worley was responsible for four butter portraits of exposition officials in the Indiana exhibit.