root growing in an unusual location e.g. from a stem
ad-ven-TISH-shus ROOT Root that forms on stems or leaves. 546
A root that develops from the node of a stem or similar organ, such as a rhizome, stolon or runner.
a root that originates from a stem instead of originating from other roots. Many cacti propagate themselves by sending forth adventitious roots from fallen stems.
A root that grows in a place where you would not expect roots to grow. For example, ivy has adventitious roots on its stems that help it to cling onto walls