Solanaceae Magnoliopsida Plantae Tracheophyta Solanales Solanum weeds Biodiversity Taxonomy Asia classification monograph vines Caribbean Africa Antilles Central America Mexico North America black nightshades vegetables new species taxonomy Madagascar South America USA Australia Eurasia Europe Pacific Solanum nigrum complex polyploidy supervegetables endemism SolanumPlantae endemismo nomenclature morphological variation wet forests widespread species Endemism Fiji Hawaiian islands New Caledonia New Guinea new species Pacific islands Solomon Islands Vanuatu Mata Atlântica Solanum section Solanum Andes black nightshades dry forests endemic glandular pubescence identification new species rarity Andes tropicales Solanum sección Solanum Solanum ptychanthum Peru Solanum triflorum Atlantic forests