Eryngium polycephalum, in Turkish (meaning Headed Eryngo), is a species of flowering plant in the family Apiaceae, endemic to Turkey.
Description and habitat A tall yellowy-green Eryngo with a single upright stem, . Its base leaves are few, persistent, with lobes somewhat like leaflets, particularly the terminal one, this being a distinctive feature; the stem leaves are smaller, 3-part, with an expanded stalk that conspicuously clasps the stem. Higher up, the stems display the flower heads with ever-increasing branching upwards, all being greenish-yellow, appearing July to September. At the base of each flower head is a whorl of 5–7 slender unequal spine-leaves that are equal to the head in size or smaller, and within a head each small flower is attended by a small simple spine. It naturally grows in stony steppe at high altitude of . Photos.
It is distinguished from similar species by the semi-leafleted form of the lowest, persistent, leaves.
Distribution It is endemic to Turkey, growing to the southern, central region of the country.
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