A new species of Haplophyllum, Haplophyllumermenekense (Rutaceae) is described and illustrated in line drawing. It grows on stony slopes of Ermenek town, Karaman province, in southern Turkey. It is compared with the closely related species H.myrtifolium. H.ermenekense is distinguished from the morphologically similar H myrtifolium chiefly by sepal shape, petal size, capsule size, presence of capsule hair and appendage form. On the other hand, the seed coat and pollen grains surface of H.ermenekense and H.myrtifolium are demonstrated in SEM photographs. In addition to the detailed description, the illustration, distribution map, conservation status and ecology of the new species are also provided.
Keywords: Haplophyllum; Rutaceae; Endemic; Karaman; taxonomy.