Scorzonera coriacea

Som tekesakalı

Caulescent perennial herb. Rootstock thickened, cylindrical, clearly clothed with the remains of old leaf bases. Stem with 5-11 leaves, erect, hollow, glabrous, clearly striate, 20-50 cm tall, 3-5 mm diam. at base, more thickening towards the capitulum, unbranched, tomentose and significantly swollen below the capitulum. Basal leaves crowded, entire, narrowly linear or linear-lanceolate, distinctly coriaceous, glabrous to sparsely tomentulose, greenish, amplexicaul, 10-29 x 0.6-1.5 cm, margins plane, apex acute to acuminate, lamina gradually narrowed towards the base, the main veins distinctly conspicuous; cauline leaves very similar to basal leaves but smaller, decreasing in size upwards. Capitula one per stem, 25-50 x 12-20 mm. Outer phyllaries 10-20 x 5-10 mm, broadly lanceolate to ovate, acute to acuminate at apex, glabrescent or sometimes with densely tomentose upper sides; inner phyllaries 25-40 x 8-10 mm, lanceolate, ± acute, sparsely tomentose and scarious margins below part. Flowers yellow, ligules longer than inner phyllaries, 10-12 x 1-1.5 mm, style branches filiform. Achenes 16-22 x 2-3 mm, ridged, furrow, regularly verruco-semuricate, narrowly ellipsoid, glabrous; pappus 24-26 mm, straw-coloured, hairs plumose below, plumose and barbellate only above. Flowering period. – May-June, fruiting period June-July.

Endemic.