Leaves: Basal leaves petiolate; petiole 3–8 cm, blade obovate or obovate-oblong, 5–15 × 3–7 cm, obtuse, sinuate-lobed, somewhat undulate, cuneate at base. Cauline leaves long-decurrent; median ones oblong, dentate-lobed or crenate-dentate; upper leaves ovate to triangular-ovate, entire or slightly dentate, acute.
الأزهار
Inflorescence & flowers: Inflorescence more or less lax, flowers fasciculate 2–5 in the axils of ovate or subcordate-triangular bracts. Pedicels to 4 mm. Calyx 6–10 mm, woolly and glandular; lobes lanceolate, acute. Corolla yellow, 30–40 mm diam., weakly punctate or not at all, tomentose outside. Stamens 5; filaments with purple-violet hairs; anthers medifixed.
الثمار والبذور
Fruit: Capsule elliptic-ovoid, 5–6 × 3–4 mm, tomentose, glabrescent at maturity.
Life-form & habit: Robust perennial, 50–200 cm, covered with a dense, woolly-tomentose indumentum, white to yellowish, often glandular above. Stems stout, cylindrical, usually simple.