It begins to flower in January and February, and continues to blossom during most of the summer.

Is increased by cuttings.


[226]

Arabis Alpina. Alpine Wall-Cress.

Class and Order.

Tetradynamia Siliquosa.

Generic Character.

Glandulæ nectariferæ 4, singulæ intra calycis foliola, squamæ instar reflexæ.

Specific Character and Synonyms.