“…However, other promising species such as some crop plants, weeds, and ornamentals may exhibit complex variation and integration, reproductive anomalies, and odd distribution patterns that make them difficult to analyze (Small, 1993). Furthermore, the classification nomenclature of such species can be inadequate and confusing (Small, 1993). If the phytoremediation plant candidate under consideration contains a deliberately introduced gene, then details of the donor organisms and methods of incorporating the gene into the host seed are required, as well.…”