Vegetative propagation of plants via cuttings depends on adventitious root formation. However, high concentrations of auxin inhibit root elongation and instead enhance adventitious root formation. Corms are structurally plant stems, with nodes and internodes with buds and produce adventitious roots. Shoots that develop from adventitious buds on roots are termed suckers. Some species are caespitose (tufted), because the crown produces adventitious buds, while others have stolons. The vegetative propagation of carob is naturally restricted due to its low adventitious rooting potential. Adventitious flower clusters form along the midrib of the cotyledon. Adventitious buds may then develop on stems with secondary growth. Sprouts originate from dormant or adventitious buds at or under the surface of the bark. Some plants produce adventitious shoots and may form a clonal colony. For them a primordially luminous mind cannot be contaminated by adventitious defilements. The underground parts consist of a slowly creeping rhizome with adventitious roots. In many plants buds appear in unexpected places&colon; these are known as adventitious buds. Adventitious roots grow from cuttings and a new plant eventually develops. Leaf cuttings of the "Crassula" form adventitious roots in the epidermis.