Lactuca quercina L., Sp. Pl. 795. 1753.

Herbs, annual or biennial; roots tuberous; stems 30 - 100 cm, erect. Leaves thin; lower lyrate pinnatifid with large, ovate, terminal segment, petiolate; upper oblong, elliptical to lanceolate, entire or pinnatifid to pinnatisect with oblong-ovate, dentate segments; all with sagittate-amplexicaul base. Inflorescence a dense, usually corymbose panicle. Heads with 7 - 15 (22) florets. Involucral bracts often with appendages. Achenes black, oblong-elliptical, 7 - 8 mm, setose at apex, 5-ribbed; beak 1/3 - 1/2 as long as the body. Pappus white.

Fl. & Fr. Aug.- Oct.

Distrib. India: W. Himalayas, on dry exposed slopes, 1500-2500 m. Jammu & Kashmir.

S. Europe and Caucasus.