What is "haplosciadium"

Haplosciadium abyssinicum is a species of flowering plant in the Apiaceae ( Umbelliferae) family; it is the only member of the genus Haplosciadium. It is a flat rosette plant endemic to the Afro-alpine zones on East African mountains, occurring on moist valley bottoms above . It engages in geocarpy as an adaptation to living on frost-heaved soils.