n. (pl.-ae) kind of bud from which, when separated from parent, new plant can grow. gemmaceous, a.gemmiferousa. bearing gemmae or gems. gemmiform, a. like a gemma or bud. gemmiparous, a. producing gemmae. gemmate, a.gemmation, n. reproduction by gemmae or buds. gemmoid, a. like a gemma.