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You are here >1Up Info > Wildlife, Animals, and Plants > Plant Species > Shrub > Species: Toxicodendron toxicarium | Eastern Poison-Oak
 

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BOTANICAL AND ECOLOGICAL CHARACTERISTICS

SPECIES: Toxicodendron toxicarium | Eastern Poison-Oak
GENERAL BOTANICAL CHARACTERISTICS : Eastern poison-oak is a native, rhizomatous, deciduous shrub [5]. It has slender, erect stems that are woody for 20 to 24 inches (50-60 cm) [5], and are not over 3 feet (1 m) tall. The trifoliate leaves are oak-like in appearance with three to seven lobes [20]. Many authors report that the leaves are more leathery than those of eastern poison-ivy; however, Gillis [8] stated that this is a variable character. The flowers are produced in dense panicles 1 to 3 inches (2.5-7.6 cm) long. The fruit is a hard, reniform-globose or depressed-globose drupe [8,20]. Unlike its congener eastern poison-ivy, it is not a climber, nor does it produce aerial roots [8]. RAUNKIAER LIFE FORM : Phanerophyte REGENERATION PROCESSES : Eastern poison-oak reproduces both vegetatively and by seed [8,11]. Vegetative reproduction in eastern poison-oak is accomplished by the formation of clones via rhizomes [20]. The intervals at which aerial stems are produced from rhizomes are greater than the intervals observed for eastern poison-ivy [8]. SITE CHARACTERISTICS : Eastern poison-oak occurs on dry barrens, pinelands [5], and oak woods [8]. It is largely confined to sandy soils of low fertility on the Atlantic and Gulf coastal plains. Soils are most often coarse sands that are low in calcium, magnesium, and potassium [8]. SUCCESSIONAL STATUS : Facultative Seral Species Eastern poison-oak is probably not tolerant of heavy shade [19]. In Louisiana, eastern poison-oak production was highest under loblolly pine plantations that had been lightly thinned, and lowest under similar plantations that had been heavily thinned [2]. SEASONAL DEVELOPMENT : Eastern poison-oak is in flower from May to June, and ripened fruits are available from August through November [5].

Related categories for Species: Toxicodendron toxicarium | Eastern Poison-Oak

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