gemma — English Dictionary

Noun

1. An asexual reproductive structure, as found in animals such as hydra (genus Hydra) and plants such as liverworts (division Marchantiophyta), consisting of a cluster of cells from which new individuals can develop; a bud.

   Examples

   I know of no other genera with such intramarginal formation of true gemmae.

   Gemmae are frequently longer than wide or of irregular shape. According to Degenkolbe, gemmae-bearing leaves are always different in form from normal leaves.

   More examples (1)

   In Marchantia polymorpha, high temperature promotes germination of gemmae (Dacknowski, 1907), and heat absorbed by the gemmae accelerates their germination (Fitting, 1942).

Noun

1. small asexual reproductive structure in e.g. liverworts and mosses that detaches from the parent and develops into a new individual

   Broader terms

   reproductive structure