As used in this act:
"Commissioner" means the Commissioner of the Department of Environmental Protection;
"Department" means the Department of Environmental Protection;
"Endangered species" means any native plant species whose survival in the State or the nation is in jeopardy, including, but not limited to, plant species designated as listed, proposed, or under review by the federal government as endangered or threatened throughout its range in the United States pursuant to the "Endangered Species Act of 1973," Pub.L.93-205 (16 U.S.C. s. 1533), any additional species known or believed to be rare throughout its worldwide range, and any species having five or fewer extant populations within the State;
"Plant" means any member of the Plant Kingdom, including all roots, stems, leaves, flowers, fruits, seeds, spores, gametophytes and other parts thereof;
"Species" means any species, subspecies, or variety of plant.