Parthenocissus quinquefolia, known as Virginia creeper, Victoria creeper, five-leaved ivy, or five-finger, is a species of flowering plant in the grape family, Vitaceae. It is native to eastern and central North America, from southeastern Canada and the eastern United States west to Manitoba and Utah, and south to eastern Mexico and Guatemala.
The name "Virginia creeper", referring to one of its native locations, is also used for the whole genus Parthenocissus, and for other species within the genus. The name Parthenocissus is from the Greek literally meaning "virgin ivy", and may derive from the common English name of this species.<ref name=AZPLA>Template:Cite book</ref> It is not closely related to the true ivy, Hedera. The specific epithet quinquefolia means "five-leaved", referring to the leaflets on each compound (palmate) leaf.<ref name=RHSLG>Template:Cite book</ref>
Parthenocissus quinquefolia is a prolific deciduous climber, reaching heights of Template:Convert in the wild. It climbs smooth surfaces using small forked tendrils tipped with small strongly adhesive pads Template:Convert in size.
The leaves are palmately compound, composed of five leaflets (rarely three leaflets, particularly on younger vines, and sometimes seven) joined from a central point on the leafstalk, and range from Template:Convert (rarely to Template:Convert) across. The leaflets have a toothed margin. The species is often confused with P. vitacea or "False Virginia creeper", which has the same leaves, but does not have the adhesive pads at the end of its tendrils.
It is sometimes mistaken for Toxicodendron radicans (poison ivy), despite having five leaflets (poison ivy has three).<ref>Template:Cite NSRW</ref> While the leaves of P. quinquefolia do not produce urushiol, the sap within the leaves and stem contains raphides (needle-shaped crystals of calcium oxalate) which can puncture the skin causing irritation and blisters in sensitive people.<ref>Template:Cite web</ref> .<ref name="MyUser_Accessdata.fda.gov_October_15_2016d">Template:Cite web</ref>
The leaves sometimes turn a decorative bright red in the fall.
Flowers and berries
The flowers are small and greenish, produced in inconspicuous clusters in late spring, and mature in late summer or early fall into small hard purplish-black berries Template:Convert diameter. These berries contain toxic amounts of oxalic acid and have been known to cause kidney damage and death to humans.<ref>Template:Cite book</ref><ref name="MyUser_Https:_November_12_2016c">Template:Cite web</ref><ref name="MyUser_Accessdata.fda.gov_October_15_2016c">Template:Cite web</ref><ref name="MyUser_Accessdata.fda.gov_October_15_2016d">Template:Cite web</ref> The berries are not toxic to birds and provide an important winter food source for many bird species.
Cultivation and uses
Parthenocissus quinquefolia is grown as an ornamental plant, because of its ability to rapidly cover walls and buildings, and its deep red to burgundy fall (autumn) foliage.<ref>Template:Cite web</ref>
It is frequently seen covering telephone poles or trees. It may kill other plants it covers by shading its support and thus limiting the supporting plants' ability to photosynthesize. With its aggressive growth, it can overburden slower-growing understory trees with its weight, damaging them. Its ability to propagate via its extensive root system makes it difficult to eradicate.
Parthenocissus quinquefolia can be used as a shading vine for buildings on masonry walls. Because the vine, like its relative P. tricuspidata (Boston ivy), adheres to the surface by disks rather than penetrating roots, it does not harm the masonry but will keep a building cooler by shading the wall surface during the summer. As with ivy, ripping the plant from the wall will leave the adhesive disks behind. If the plant clings to fragile surfaces it can first be killed by severing the vine from the root. The adhesive pads will then eventually deteriorate and release their grip.
‘Parthenocissus’ is derived from Greek and means ‘virgin ivy’ (hence the common name ‘Virginia creeper’).<ref name="gledhill">Gledhill, David (2008). "The Names of Plants". Cambridge University Press. Template:ISBN (hardback), Template:ISBN (paperback). pp 292, 324</ref>
‘Quinquefolia’ means ‘five-leaved’. ‘Quinque’ – ‘five’ and ‘folia’ – ‘foliage’, ‘leaves’.<ref name="gledhill" />
- Vine, general article on climbing plants
- Boston Ivy or Japanese creeper (P. tricuspidata, or Ampelopsis veitchii)
- False Virginia creeper (P. vitacea)
Tendrils beginning to twine around a metal trellis
- USDA Forest Service fact sheet on Virginia Creeper (PDF)
- USDA Plant Guide (PDF)
- USDA Plant Factsheet (PDF)
- Parthenocissus quinquefolia images at bioimages.vanderbilt.edu
- Template:Cite Collier's