K. acutipetala (N.E.Br.) N.E.Br. usually grows in shallow soil between quartzitic rocks. The capsules have six to eight locules that always return to the closed position after they have opened. This is not an endangered species, but the habitat is being lost as housing in Gauteng expands.

K. alticola . Its name is derived from its occurrence at high altitudes. It also grows in rocky places. The flowers are pale pink or white and the capsules tend to gape open once wetted, never closing completely again. Although plentiful in habitat, its occurrence is not widespread.

K. beswickii is found between Heidelberg and Nigel in Gauteng and was once considered to be extinct, but populations of these plants have recently been rediscovered. It forms large, flat clumps that grow in quartzitic rocks. The flowers can be very pale pink to deeper pink and the capsules have five to eight locules, sometimes gaping once wetted. It is listed as critically endangered in Gauteng as habitat loss due to urbanization is a threat to this species.

K. carolinensis (L.Bolus) L.Bolus is found on quartzitic rocks near Carolina in Mpumalanga and also grows further to the south and north. The name refers to the place where the first specimen was found (Carolina). See more info below.

K. media P.Winter & N.Hahn, the most recently described addition to the genus (Winter & Hahn 1999), differs from the others in that it grows on soils derived from igneous rocks while all the others grow in soils derived from sedimentary rocks. The name refers to its distinguishing characters, which bridge the differences between other species. The flowers are white and the capsules are five- to six-locular, closing again after they have opened.