Sourwood (Oxydendrum arboreum)

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Sourwood (Oxydendrum arboreum)

Fairly common understory tree in areas with dry, acidic soil. Fragrant sprays of small white flowers in early summer and brilliant scarlet leaves in fall. The large, simple, finely serrate leaves have an acidic taste, similar to wood-sorrel (Oxalis). Young leaves are edible. Can be difficult to remember how to spell -- note that the genus is not spelled Oxydendron and the species is not arboretum.

Sourwood (Oxydendrum arboreum)

Hanging sprays of fragrant white urceolate (urn-shaped) flowers, arranged in racemes, appear in late spring. They are very popular with bees and other insects.

The butterfly is a Silver-spotted Skipper (Epargyreus clarus).

Moore Co., NC 6/10/06.

Sourwood (Oxydendrum arboreum)

Sprays of up-pointed capsules full of minute seeds follow the flowers in fall.

Sourwood (Oxydendrum arboreum)

Scotland Co., NC 11/1/08.

Sourwood (Oxydendrum arboreum)

Leaves of seedlings are bristly-hairy.

Hanging Rock, Stokes Co., NC 6/14/2009.

Sourwood (Oxydendrum arboreum)

Detail of bristly seedling leaves.

Hanging Rock, Stokes Co., NC 6/14/2009.

Sourwood (Oxydendrum arboreum)

The deeply furrowed, blocky bark is quite distinctive. The trunk usually leans, almost never growing straight up, and is oval in cross-section instead of circular.

More information:
NC State Fact Sheet
Trees of Alabama and the Southeast
Virginia Tech Dendrology

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cwcook@duke.edu

All photographs and text ©2009 by Will Cook unless otherwise indicated.