Lapiedra is a monotypic genus in the family Amaryllidaceae. It is native to Spain and Morocco.
Lapiedra martinezii is the only species in the genus and grows in rocky crevices or on very stony soil near the sea or in very hot areas inland. In the autumn several pure white, glistening flowers appear on a 15 cm scape. Photos 1-2 by Alessandro Marinello. Photos 3-4 from Hans Joschko.