 Botanists have segregated the species into four varieties, distinguished by leaf shape and differences in the hairs covering the foliage.Marco Vassi

Marco Ferdinand William Vasquez-d'Acugno Vassi (November 6, 1937 in New York City – January 14, 1989 in New York City) was an American experimental thinker and author, most noted for his erotica.He wrote fiction and nonfiction, publishing hundreds of short stories, articles, more than a dozen novels, and at least one play, "The Re-Enactment," (under the name of Fred Vassi) at the Caffe Cino in January 1966.