offset

A short shoot that arises from an axillary bud near the base of the stem and gives rise to a daughter plant at its apex. Examples of offsets are those produced by the houseleek (Sempervivum tectorum). The offset is a type of short *runner and, like runners, is a means of vegetative reproduction. The term is also applied   to   bulbils   and   cormlets   that form at the side of the parent bulb or corm.