Vegetative Features Common to Many Bryophytes Gemmae in Bryophytes Gemmae are a means of asexual reproduction found in many bryophytes. Gemmae are 1 to many celled, specially produced clonal plant fragments. Some specific examples of gemmae are illustrated in the table below. The form of the gemmae is often very useful when identifying certain bryophytes. Rhizoids anchor the gametophyte to the substrate.
Rhizoids can be important taxonomic characters.