Native to (or naturalized in) Oregon:
- Broadleaf deciduous tree, 30-40 ft (9-12 m) tall, sometimes over 60 ft (18 m), open branched, rounded crown. Leaves alternate (appear as if in whorls), simple, large, 30-80 cm long and 17-30 cm wide (sometimes as large as 100 cm × 45 cm), oblong-obovate, base heart-shaped (cordate) or with little ear-like appendages (auriculate), margin entire, bright green and glabrous above and silvery gray and pubescent below. Flowers are large, cup-shaped, creamy-white, 20-25 cm wide or larger, 6(9) petals (tepals), inner tepals purple near base, solitary, fragrant. Blooms in early summer. Fruit cluster to 9 cm, ovoid to globose, rose-pink, seeds red.
- Sun or partial shade, acid, well-drained soil.
- Hardy to USDA Zone 5 Native range from Ohio to Florida and west to Arkansas and Louisiana, often growing in shady, moist areas, although a wide range it is not common in any locality, populations are generally small and isolated.
- macrophylla: macro, large, phylla, leaf. Produces the largest leaves and flowers in the Magnolia genus.