A new species of Onosma L. (Boraginaceae: Lithospermeae), from the Hakkari province eastern Turkey, is described and illustrated. The endemic distributed in a narrow area Sat Mountains. Taxonomically closest relative satensis sp. nov. O. polioxantha Rech. f. which also occurs Turkey. In addition, it primarily distinguished by its navicular leaves, longer reticulate cauline pedicels calyx, dense...
