[3] A small, gracile, erect-to-decumbent plant, with long, slender, fragile, stick-like branches.

[4] The grey-green leaves are slightly triangular in cross-section, and have large bladder cells on their leaf-surface.

The solitary, bright pink-to-purple flowers are born on long pedicels.

They have petals with slightly notched apices, small pale filamentous staminodes, and yellow anthers.

[5][6] It has gained the Royal Horticultural Society's Award of Garden Merit.