Erect branches may arise from the protonema, and gemmae may be developed on it.
The gemmae formed on submerged Mucors may bud like a yeast, and even bring about alcoholic fermentation in a saccharine solution.
Usually the gemmae arise by the outgrowth of superficial cells, and become free by breaking away from their stalk.
Plural gemmae (jěm'ē')
A budlike mass of undifferentiated tissue which serves as a means of vegetative reproduction among mosses and liverworts. The gemmae, often formed in structures called gemma cups, are usually dispersed from the parent plant by the splashing of raindrops, after which they develop into new individuals.