''Sedum lineare'' also known as carpet sedum, needle stonecrop or sea urchin, is a

sedum ''Sedum'' is a large genus of flowering plants in the family Crassulaceae, members of which are commonly known as stonecrops. The genus has been described as containing up to 600 species, subsequently reduced to 400–500. They are leaf succulen ...

originating in East Asia. It has been proposed as an ideal plant for the "

greening Greening is the process of transforming living environments, and also artifacts such as a space, a lifestyle or a brand image, into a more environmentally friendly version (i.e. 'greening your home' or 'greening your office'). The act of greenin ...

" of flat-roofed buildings in Shanghai, China, due to factors such as its ability to tolerate cold and drought, little need for soil and its roots' lack of penetrating ability,A GOOD PLANT SUITABLE FOR ROOF GREENING——PRELIMINARY INVESTIGATION Sedum lineare
(in Chinese)

References

lineare {{Crassulaceae-stub