Mikania micrantha is a tropical plant in the Asteraceae; known as bitter vine, climbing hemp vine, or American rope. Ecological Threat Mile-a-minute grows rapidly, producing a thick tangle of vines over herbaceous and woody plants and even scrambling up into trees. Scientific name: Mikania micrantha. Called by this name because that is just what it does given half the chance. It is a trailing herbaceous annual vine with barbed stems and triangular leaves. It will cover the native plants from available sunlight, which doesn’t allow them to photosynthesize. The tangles of vine even climb on trees and form dense mats which block the sunlight, and due to the unavailability of the light, the tree cannot photosynthesize. It invades open and disturbed areas, such as fields, forest edges, stream banks, wetlands, roadsides and wetlands. It is also sometimes called mile-a-minute vine (a moniker also used for the unrelated Persicaria perfoliata).It is known as Japani lota (জাপানী লতা) in Assam.. Mile-a-minute is an aggressive weed, this rapidly growing plant reduces the biodiversity of native plants. This in turn puts stress on … Mile-a-minute vine is similar to kudzu in that way, except for one key difference: It's an annual, rather than perennial. It thrives in warm and humid environments, and has been observed to grow almost half a meter per week under optimal conditions. Back to Invasive Plant Photos and Information. Has rather pointy leaves and when in flower has clumps of very small white blossoms. Invasive Plants in Pennsylvania: Mile-A-Minute (PDF | 151 KB) Pennsylvania Department of Conservation and Natural Resources. Mile a Minute vine or Devil's tear thumb Polygonum perfoliata Life Cycle: Summer annual herbaceous vine that can climb over vegetation, smothering plants forming dense mats; invasive Growth habit: Thrives in full … See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands The plant grows very fast, and will absorb nutrients quicker than its competitors. Mile-a-minute vines are easily distinguished from other vining plants by their triangular leaves, distinctive prickles or barbs, and large, obvious ocrea (see species identification page for photos of these traits).. Other plants, particularly other vines, may be confused with mile-a-minute. Clematis 'Elizabeth' - Clematis 'Mile-A-Minute Elizabeth' with its scented delicately coloured pale pink flowers, and pale yelllow stamens, is great for covering sheds,pergolas,walls and for growing up trees for added enjoyment - throughout May, June and July this Clematis just looks sensational. It can cover and ruin a garden in a very short space of time. Mile-a-minute is known to out compete natives for resources. Mikania micrantha Kunth (also known by the common names of climbing hempweed, mile-a-minute, Chinese creeper and bittervine) is a fast growing vine on both the federal and Florida state noxious weed lists. Persicaria perfoliata (basionym Polygonum perfoliatum) is a species of flowering plant in the buckwheat family.Common names include mile-a-minute, devil's tail, giant climbing tearthumb, and Asiatic tearthumb. That means that unlike kudzu, mile-a-minute … Mile-a-minute is found in the northeast from Virginia to New York to Ohio and Oregon. English name: Mile-a-minute. 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