Plumule vs. Plumula

A down feather.

(botany) A plumule.

The young shoot of a plant embryo above the cotyledons, consisting of the epicotyl and often of immature leaves.

(zoology) A down feather.

(botany) The first bud, or growing point, of a plant embryo, situated above the cotyledons.

A plumule.

(zoology) A down feather.

A down feather.

(zoology) The aftershaft of a feather.

(zoology) One of the featherlike scales of certain male butterflies.

The first bud, or gemmule, of a young plant; the bud, or growing point, of the embryo, above the cotyledons. See Illust. of Radicle.

A down feather.

down feather of young birds; persists in some adult birds