The roots that originate from the base of the stem are:

The roots that originate from the base of the stem as a cluster are called fi brous roots. These roots are present in monocots. 
(2) Primary root is the one formed due to direct prolongation of radicle. 
(3) Prop roots are adventitious roots that originate from the horizontal branches of huge trees to provide pillar-like mechanical strength to branches. 
(4) Lateral roots originate from the pericycle of existing roots. These may be secondary, tertiary and quaternary
or further order lateral roots.