The sprout at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form.

To put forth the first sprout.

The barley embryo which grows inside the husk during germination.

The embryonic barley plant that grows inside the husk during germination.

The beginnings of the plant shoot in germinating barley.

The acrospire is the shoot of a barley plant that develops during the germination stage of the malting process.