Burtt in its habit and leaf form, but differs by its leathery leaves, glabrous peduncles, pedicels and calyx, distinctly bilabiate corollas, and capsulesnot spirally twisted.

• Burtt,与后者不同在于叶革质,花序梗、花梗及花萼均无毛,花冠明显二唇形,蒴果不旋扭。