Reichardi, a minute stemless plant, has small heart-shaped leaves in rosette-like tufts, and white flowers striped with pink, produced successively.
Beautiful dwarf spring-blooming rock plants, forming carpety tufts of flowers of simple cruciferous form.
C. alpinus, 6 in., grows in dense tufts, and bears sulphur-yellow flowers in May.
The roots also are affected, and instead of growing considerably in length, branch repeatedly and give rise to little tufts of rootlets.
The Priapuloidea are dioecious, and their male and female organs, which are one with the excretory organs, consist of a pair of branching tufts, each of which opens to the exterior on one side of the anus.