Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Core eudicots
Order:Caryophyllales
Family:Aizoaceae
Subfamily:Ruschioideae
Tribe:Ruschiae
Genus:Lithops
Species: L. werneri

Origin & Habitat: L. werneri has a monocolonial distribution limited to a small patch in the Erongo Mountains, Karibib district, Namibia.

Description: L. werneri is among the smallest species in the genus, if not the smallest of all the Lithops, with stubby, rounded, yet irregularly-lumpy leaf-pairs, mostly light grey or light greenish grey with several dark greenish brown lines and small pellucid dots.

From my collection

via Flickr https://flic.kr/p/2h74qAH