Magnolia grandiflora

Magnolia grandiflora, commonly known as the southern magnolia or bull bay, is a tree of the family Magnoliaceae native to the Southeastern United States, from Virginia to central Florida, and west to East Texas. Reaching 27.5 m (90 ft) in height, it is a large, striking evergreen tree, with large, dark-green leaves up to 20 cm (7+3⁄4 in) long and 12 cm (4+3⁄4 in) wide, and large, white, fragrant flowers up to 30 cm (12 in) in diameter.

Although endemic to the evergreen lowland subtropical forests on the Gulf and South Atlantic coastal plain, M. grandiflora is widely cultivated in warmer areas around the world. The timber is hard and heavy, and has been used commercially to make furniture, pallets, and veneer.

Magnolia grandiflora is a medium to large evergreen tree which may grow 120 ft (37 m) tall. It typically has a single stem (or trunk) and a pyramidal shape. The leaves are simple and broadly ovate, 12–20 cm (4+3⁄4–7+3⁄4 in) long and 6–12 cm (2+1⁄4–4+3⁄4 in) broad, with smooth margins. They are dark green, stiff, and leathery, and often scurfy underneath with yellow-brown pubescence.

The large, showy and fragrant lemon-citronella-scented flowers are white and measure up to 30 cm (11+3⁄4 in) across. Each bloom consists of six to 12 petals with a waxy texture, emerging from the tips of twigs on mature trees in late spring.

Pollination of the flower produces a rose-colored fruit, an ovoid polyfollicle that is approximately 7.5–10 cm (3–3+7⁄8 in) long and 3–5 cm (1+1⁄4–2 in) wide.

Exceptionally large trees have been reported in the far Southern United States. The national champion is a specimen in Smith County, Mississippi, that stands 37 m (121 ft). Another record includes a 35-m-high specimen from the Chickasawhay District, De Soto National Forest, in Mississippi, which measured 17.75 ft (5.4 m) in circumference at breast height, from 1961, and a 30-m-tall tree from Baton Rouge, Louisiana, which reached 18 ft in circumference at breast height.

M. grandiflora was one of the many species first described by Linnaeus in the 10th edition of his Systema Naturae in 1759, basing his description on the earlier notes of Miller. He did not select a type specimen. Its specific epithet is derived from the Latin words grandis "big", and flor- "flower". The genus name Magnolia honors Pierre Magnol, a French botanist.

M. grandiflora is most commonly known as southern magnolia, a name derived from its range in the Southern United States. Many broadleaved evergreen trees are known as bays for their resemblance to the leaves of the red bay (Persea borbonia), with this species known as the bull bay for its huge size or alternatively because cattle have been reported eating its leaves. Laurel magnolia, evergreen magnolia, large-flower magnolia or big laurel are alternative names. The timber is known simply as magnolia.