Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Ampelopsis arborea (L.) Koehne
- Family: Grape (Vitaceae)
- Flowering: May-June
- Field Marks: This vine differs from all others by its alternate leaves which are double pinnately
compound, with coarsely toothed leaflets.
- Habitat: A wide variety of habitats from upland fencerows on moist sites to winter-flooded
- Habit: High-climbing vine with few or no tendrils, the tendrils usually forked, or low-growing and bush-forming without tendrils.
- Stems: Slender, smooth, round to angular in cross-section, sometimes rough with warty oval lenticels,
scrambling or climbing, with few or no tendrils.
- Leaves: Alternate, doubly pinnately compound, each leaflet ovate, pointed at the tip, tapering or
rounded at the base, coarsely toothed, usually smooth on both surfaces, sometimes hairy on the veins
beneath, up to 2 inches long but often much smaller.
- Flowers: Many in an umbel-like cluster at the tips of the stems, some bearing only fertile stamens,
others bearing only fertile pistils.
- Sepals: Very small, green or whitish, 4-parted.
- Petals: 5, greenish, rounded and ciliate at the tip, free from each other, up to 1/8 inch long.
- Stamens: 5, opposite the petals.
- Pistils: Ovary superior, sitting on a small, fleshy, lobed disk.
- Fruits: Berries in umbel-like clusters, subglobose, black, shiny, 1/4-3/8 inch in diameter, usually
smooth, usually with 2-4 seeds.
- Notes: The fruits are not edible for humans. The new leaves are reddish but turn dark green at
maturity. Leaves on vigorous plants often blue-green.
Return to Species List -- Group 9
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