Toxicodendron pubescens

(Atlantic Poison Oak)


Toxicondendron pubescens, Lockhart State Park, Caldwell Co. 4434


Toxicondendron pubescens, Lockhart State Park, Caldwell Co. 4443


Toxicondendron pubescens, Lockhart State Park, Caldwell Co. 4446

Scientific Name Toxicodendron pubescens (Rhus toxicodendron var. eximia) USDA PLANTS Symbol TOPU2
Common Name Atlantic Poison Oak, Eastern Poison Oak ITIS Taxonomic Serial No. N/A
Family Anacardiacaea (Sumac) SEINet
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Description Habitat: Sandy soils in forests, natural areas, thickets and dry areas in fields.
Plant: Suberect shrub, simple or somewhat branched, seldom over 40 inches tall; slender stems, grayish-brown, and smooth or slightly hairy.
Leaves: Compound trifoliate leaves tending to crowd the upper parts of the stems, leaflets ovate or rhombic and usually with 2 to 4 blunt or rounded deep teeth or shallow lobes on each side; terminal leaflet is larger (1 to 8 inches long and 1/2-inch to 5 inches wide) and on a petiolule (stalk) up to 1-3/4 inches long; lateral leaflets are somewhat smaller and sessile; deciduous green leaflets become orangish-red in the fall.
Inflorescence: Panicles of several to many small, rather inconspicuous flowers less than 1/4-inch across, each with five yellowish-white petals and five stamens.
Bloom Period: March and April.
Fruit: Tight clusters of greenish-white berries in late spring, becoming tannish-white, each 1/4-inch across.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, NC State Extension and SEINet.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024