耳菊 er ju

Lactuca blinii H. Léveillé; L. ochroleuca (Maximowicz) Franchet; Prenanthes blinii (H. Léveillé) Kitagawa; P. maximowiczii Kirpicznikov, nom. illeg. superfl.; P. ochroleuca (Maximowicz) Hemsley.

Herbs to 90 cm tall, perennial, with thick rhizomes. Stem solitary, erect, branched in apical portion, with scaly dark brown and crisped hairs or glabrous. Lower and middle stem leaves petiolate; petiole to 26 cm, basally expanded and semiamplexicaul, wing sinuate-dentate; leaf blade lyrately pinnatisect, adaxially usually with multicellular brown hairs, margin irregularly coarsely sinuate-dentate; lateral lobes 1 or 2 pairs, elliptic, rhombic, or irregularly rhombic, 5.5-7 × ca. 4 cm, basal ones smaller; terminal lobe broadly triangular to irregularly orbicular, 6-9 × 5-9 cm. Upper stem leaves with petiole to 4.5 cm; leaf blade triangular, smaller, undivided, otherwise similar to middle stem leaves; uppermost stem leaves sessile, lanceolate, with an expanded amplexicaul base. Synflorescence paniculiform with virgate racemiform branches, with numerous capitula, axes densely covered with multicellular crisped hairs. Capitula with 20-25[-30] florets. Involucre narrowly campanulate, 13-15 × ca. 7 mm. Phyllaries dark green when dry, abaxially with scaly hairs or glabrous, apex acute; outer phyllaries linear-lanceolate, longest ca. 1/2 as long as inner ones; inner phyllaries 10-12, linear-lanceolate. Florets pale yellow. Achene brown, ± columnar, 7-8 mm, somewhat compressed, apex truncate. Pappus brownish, 6-7 mm. Fl. and fr. Aug-Sep. 2n = 16.

Moist areas in forests; 100-200 m. Jilin [Korea, SE Russia].