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The Biology Of Invasive Alien Plants In Canada. 5. Polygonum Cuspidatum Sieb. & Zucc. [= Fallopia Japonica (Houtt.) Ronse Decr.], Prasanta C. Bhowmik, Antonio Ditommaso, Nishanth Tharayil, Jacob N. Barney
The Biology Of Invasive Alien Plants In Canada. 5. Polygonum Cuspidatum Sieb. & Zucc. [= Fallopia Japonica (Houtt.) Ronse Decr.], Prasanta C. Bhowmik, Antonio Ditommaso, Nishanth Tharayil, Jacob N. Barney
Prasanta C. Bhowmik
Polygonum cuspidatum (Japanese knotweed) is an introduced perennial geophyte in the buckwheat family (Polygonaceae). The phytogeographic distribution of P. cuspidatum in North America suggests a large number of intentional introductions via ornamental plantings from 1870 to 2000, followed by secondary spread from these foci. This species is most pernicious along riparian corridors and road and railroad rights-of-way, reducing visibility, displacing native species, negatively affecting native wildlife, and causing alterations in natural hydrologic processes. Although non-hybrid seed recruitment has not been observed in Europe because of the presence of male-sterile clones only, dispersal of seeds and stem and rhizome fragments by …