Oreonana clementis, the pygmy mountainparsley, is a perennial plant in the carrot family (Apiaceae) that grows in the United States Sierra Nevada mountain range.
It can be found in the Sierra Nevada from , in dry, granitic gravels.
A tuft of , gray, hairy leaves are attached directly to the root, with no stems.
Balls of whitish flower clusters on short stems occur from May to August.