Complex sentence: It has leaves that are stiff, and elliptic to oblanceolate (i.e. the top is wider than the bottom), 5-20 cm long and 1.5-6 cm wide, and yellow dandelion-like flowers.
Split into simpler sentences: It has leaves that are stiff, and elliptic to oblanceolate (i.e. the top is wider than the bottom). The plant is 5-20 cm long and 1.5-6 cm wide, with yellow dandelion-like flowers.