Wood and Charcoal Indentification in Southern MD

Sumacs (Rhus spp./Anacardiaceae). Sumac contains 100 to 150 species: 100 that grow in Eurasia/Africa, 5 in Central America and 54 in North America. All species look alike microscopically and fluoresce under long-wave ultraviolet light. One species, R. vernicifera, is used for Oriental lacquer.

Staghorn Sumac (Rhus typhina./Anacardiaceae) is native to North

America, from Quebec to Maine, southern Ontario, northern Michigan, Wisconsin, and Minnesota; south to northeastern Iowa, Illinois, Indiana, northern Kentucky, West Virginia, and Maryland. In mountainous areas, it extends south to Virginia, North Carolina, northern Georgia and central Tennessee.

The largest of the native sumacs , Staghorn sumac is classed as a large shrub reaching 40 ft (12 m) high and 1 ft (0.3 m) wide at base. Fast-growing, sumacs are short-lived plants that serve as cover and food for wildlife. The its copious fruits are consumed by many species of birds and mammals, while the leaves are also eaten by mammals. Sumacs can be shrubs, vines or trees with alternate pinnately compound leaves, which may be evergreen or deciduous. The flowers, produced in small clusters, are yellowish green and turn into velvety bunches (staghorns) in the fall. The fruits berry-like, small, and round or oval, and contain a pit and seed. The leaves turn to red, purple and yellow in the fall. Tannins can be obtained from bark and leaves.

The wood of sumac is ring porous to semi-ring porous, with a whitish gray sapwood streaked with yellow or green. The heartwood is olive-green to greenish yellow to russet brown with dark streaks. The wood, which fluoresces under ultraviolet radiation, is lightweight, soft, and brittle, with a high luster. Sumac is easily air-dried without cracks or checks. The fresh-cut wood exudes a sticky fluid at the cambium (junction between bark and wood); both the sap and wood cause dermatitis. Although it frays on turning, sumac wood is easily worked with sharp tools. It is used for novelties, carvings and turned items.

Characteristics found in the Sumac, Staghorn (Rhus typhina):

Ring to semi-ring porous
Coalesced/Confluent parenchyma
Tyloses
Spirals in vessels
Simple perforations
I/V pits small (4-7)
Uniseriate, heterocellular rays

WOOD SLIDES
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CHARCOAL SLIDES