ABSTRACT
ASEXUAL (VEGETATIVE) REPRODUCTION Vegetative reproduction in nature In numerous land plants, ranging from bryophytes to many vascular taxa, vegetative reproduction occurs naturally as an adjunct to, or sometimes a replacement for, the sexual process (468-470). Considerable areas of land may become colonized by clonal individuals and in northwest America Populus tremuloides (quaking aspen) rarely reproduces by seed but extensive forests have arisen from adventitious root buds (471).
