![]() It prefers full sun but can tolerate partial shade. It has been reported to be invasive in Alabama, Delaware, Florida, Georgia, Illinois, Maryland, New Jersey, North Carolina, South Carolina, Tennessee and Virginia, although it is probably invasive in additional states where it occurs. from Minnesota to Vermont, south to Texas and Florida. Sweet autumn virginsbower is documented to occur in much of the eastern U.S. Origin and DistributionClematis terniflora is originally from Japan and China. In late summer infestations are conspicuous as a result of its abundant showy white flowers. It grows vigorously over other vegetation, forming dense blankets that block sunlight to the plants underneath. This species is found invading forest edges, right-of-ways and urban areas along streams and roads. ImagesPhoto: Chris Evans, River to River CWMA, FruitSeeds are produced in profusion and are showy due to long, silvery-gray, feather-like hairs attached. Flowers Flowers are produced late summer through fall flowers are white with four petals. long and have entire (non-toothed) margins. Stema semi-evergreen climber or groundcover with semi-woody steps up to 4 inches LeavesLeaves are opposite, compound 3 leaflets leaflets are 2-3 in. Sweet autumn virginsbower is a climbing, deciduous to semi-evergreen, perennial vine. Clematis terniflora DC.ĭescriptionSweet autumn virginsbower was introduced into the United States as an ornamental perennial vine and is still widely sold in the nursery trade. Louis County, MO, 10-31-2011, and near Labadie, Franklin County, MO, 9-4-2016 (SRTurner).Clematis terniflora DC. Photographs taken off Moore's Mill Road, Auburn, AL., 8-26-04 (DETenaglia), also near Glencoe, St. Although the plant does not have tendrils, it climbs and clambers over trellises or other vegetation by means of the leaf stalks, which twine around objects in the manner of tendrils.Ī synonym is C. The flowers are about 3-4 cm broad and attract many beneficial flying insects. ![]() The plant may be recognized by its showy sprays of flowers with four "petals" (these are actually sepals), and its entire, unlobed leaflets. It also escapes cultivation and may spread aggressively by seed in gardens. It is frequently cultivated, and many occurrences in apparently wild places may represent persistence from former cultivation. This beautifully showy and fragrant species is found in widely scattered locations throughout Missouri, and its U.S. Lookalikes - Clematis virginiana, Clematis catesbyana. Also escaped to disturbed areas, empty lots. Habitat - Fencerows, roadsides, railroads, gardens. Pistils 5, distinct, 8 mm long, silky-hairy.įruits - Achenes, flattened-ellipsoidal, to 8 mm long, with the beak 2-6 cm long, plumose with long, spreading hairs. Anthers whitish to pale yellow, to 2 mm long. Perianth saucer-shaped, the sepals 9-15 mm long, spreading horizontally, white and petal-like, not thickened or leathery, the margins relatively smooth, the outer surface hairy, the inner surface glabrous. Peduncles and pedicels glabrous to sparsely pubescent.įlowers - Mostly perfect, fragrant. Inflorescence - Axillary cymose panicles. Well-developed leaves pinnately 5-7 compound, herbaceous in texture, the minor veins not raised, the leaflets entire, to 7 cm long and 4 cm broad, mostly ovate, some cordate at the base, the upper surface green, the undersurface glabrous or very sparsely hairy along the main veins, green or pale but not glaucous. Stems - Twining to trailing or climbing, to 6 m, somewhat woody near base, much branched.
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