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Toxicodendron radicans ssp. verrucosum
Toxicodendron radicans (L.) Kuntze ssp. verrucosum (Scheele) Gillis
Eastern Poison Ivy
Anacardiaceae (Sumac Family)
Synonym(s): Toxicodendron radicans var. verrucosum
USDA Symbol: TORAV
USDA Native Status: L48 (N)
A shrub or climbing vine, older stems of vines fastened to trees by a dense growth of aerial rootless and often climbing into treetops. Common to abundant in and at the edges of wooded areas, and containing an oil capable of causing intense itching and watery blisters through contact with the skin. Leaves variable in size, divided into 3 leaflets on an often reddish tinged petiole; the terminal leaflet symmetric, roughly ovate but lobed and toothed, larger than the lateral ones; lateral leaflets asymmetric, lobed and toothed on the side toward the leaf base and usually only toothed on the opposite side, turning orange and red in autumn. Flowers greenish white, inconspicuous, in clusters up to 4 inches long. Fruit cream to white, sometimes a dull yellow, spherical, about 1/4 inch in diameter, conspicuous on bare twigs in winter.
From the Image Gallery
Plant Characteristics
Duration: PerennialHabit: Herb , Subshrub , Shrub , Vine
Fruit Type: Drupe
Size Notes: Up to about 4 feet tall when shrub-like. Up to about 10 feet long when climbing on trees.
Bloom Information
Bloom Color: White , GreenBloom Time: May , Jun , Jul
Distribution
USA: MO , OK , TXBibliography
Bibref 354 - Native & Naturalized Woody Plants of Austin & the Hill Country (1981) Lynch, D.Bibref 281 - Shinners & Mahler's Illustrated Flora of North Central Texas (1999) Diggs, G. M.; B. L. Lipscomb; B. O'Kennon; W. F...
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Web Reference
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona ChapterAdditional resources
USDA: Find Toxicodendron radicans ssp. verrucosum in USDA PlantsFNA: Find Toxicodendron radicans ssp. verrucosum in the Flora of North America (if available)
Google: Search Google for Toxicodendron radicans ssp. verrucosum
Metadata
Record Modified: 2023-01-18Research By: TWC Staff