feathering

airon kääntäminen lappeelleen (present participle of)
A feathered texture.
1834, Paxtons Magazine of Botany, and Register of Flowering Plants''

The whole flower is very small; the tube is faintly marked with lilac lines; the petals are concave, the three outer white, marked with three lines, the middle one narrow, without featherings, the outer ones broader, and neatly feathered (..)