Variation
var. striatum, syn. var. lancastrense
This compact prostrate form grows to 100mm (4in) tall and spreads up to 1m (3ft) wide. It produces pale pink flowers that have darker pink veins.

Cultivars
'Album'
This plant has a lax habit and produces white flowers throughout summer.

'Farrer's Form' var. striatum
This perennial forms a compact habit up to 150 mm tall with dark green and mid-green foliage.  During spring it produces pale pink saucer-shaped flowers that have darker veins.

'Shepherd's Warning'
This plant has a compact habit to 150mm (6in) tall and produces red-pink flowers.

'Splendens'
This plant produces pale pink flowers with darker veins.

'Vision'
This plant has a compact habit with deep pink flowers.