A semi-evergreen perennial suitable for rock gardens. Leaves form in rosettes. The solitary flowers lack stalks. Blooms in fall.

A spreading perennial that dies back in winter. Clusters of flowers appear in late summer.

An upright perennial that dies back in winter. Flowers are without stalks, and appear in pairs or clusters, late summer to autumn.

An upright, clump-forming perennial. Leaves are veined. Flowers are without stalks, bloom in late summer. Dies back in winter.

An upright perennial that dies back in winter. Flowers appear in late summer.

A semi-evergreen perennial, suitable for rock gardens. Leaves form in rosettes. Solitary flowers appear on prostrate stems, late summer to autumn.

A semi-evergreen perennial, suitable for rock gardens. Leaves form on rosettes. Solitary flowers appear on long stalks in summer.

An evergreen perennial suitable for rock gardens. Solitary flowers appear in late spring and early summer.

An upright perennial. Leaves from in rosettes. Flowers are stalkless, and appear in late summer. Dies back in winter.

A clump-forming perennial that dies back in winter. Leathery leaves form in basal rosettes. Flowers bloom from midsummer to autumn.