Trees , single-trunked, to 45 m. Bark light gray, thick, deeply furrowed. Stipules paired, light green, elliptic to oblanceolate, 20-45mm; petiole 5-11.5 cm. Leaf blade commonly with 2 shallow upper lobes and 2 lateral lobes at broadest part, or sometimes squarrose and barely lobed, (6.5-)7.5-15(-23.5) × (8.5-)12.5-18.5(-25.5) cm; surfaces abaxially glaucous, adaxially bright green. Flowers campanulate; spathaceous bract 1, brownish, notched; tepals erect, adaxial orange blotch sometimes gummy, outermost tepals green to glaucous; stamens 20-50, 40-50 mm; filaments white; pistils 60-100. Samaracetums 4.5-8.5 cm, with numerous (1-)2-seeded, imbricate samaras 3-5.5 × 0.5-1 cm, falling separately at maturity; receptacles with basal pistil persistent. Seeds (1-)2. 2 n =38.
"Sturdy tree to 60 m; lvs long-petioled, 8–14 cm long and about as wide, broadly retuse; fls solitary at the ends of the branches; sep pale green; pet 4–5 cm, greenish-yellow, with a large basal orange blotch within; frs narrow and elongate, 3–4 cm; 2n=38. Rich woods; Vt. to s. Mich., s. Ill., and se. Mo., s. to Fla. and La., often cult. May, June."
|Yellow-poplar, tulip-poplar, tuliptree, bois-jaune|