List of endangered plants
As of September 2016, the International Union for Conservation of Nature (IUCN) lists 3654 endangered plant species. 17% of all evaluated plant species are listed as endangered. The IUCN also lists 99 subspecies and 101 varieties as endangered. No subpopulations of plants have been evaluated by the IUCN. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of exintction". An even higher risk is faced by "critically endangered" species, which meet the quantitative criteria for endangered species. Critically  endangered plants are listed separately. There are 6147 plant species which are endangered or critically endangered. Additionally 1674 plant species (7.6% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of "data deficient" indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at  least until their status can be assessed." This is a complete list of endangered plant species, subspecies and varieties evaluated by the IUCN. Bryophytes. There are 29 bryophyte species assessed as endangered. Pteridophytes. There are 67 species and one subspecies of pteridophyte assessed as endangered. Leptosporangiate ferns. There are 61 species and one subspecies in the class Polypodiopsida assessed as endangered. Polypodiales. Species Subspecies Gymnosperms. There are 163 species, seven subspecies, and 29 varieties of gymnosperm assessed as endangered. Cycads. Species Subspecies Conifers. Species Subspecies Varieties Dicotyledons. There are 2770 species, 81 subspecies, and 70 varieties of dicotyledon assessed as  endangered. Piperales. There are 51 species in the order Piperales assessed as endangered. Campanulales. Campanulaceae. Species Subspecies Theales. There are 174 species, 12 subspecies, and two varieties in Theales assessed as endangered. Dipterocarpaceae. Species Subspecies Theaceae. Species Varieties Guttiferae. Species Subspecies Varieties Linales. Species Varieties Malvales. There are 67 species, four subspecies, and one variety in the order Malvales assessed as endangered. Malvaceae. Species Subspecies Sterculiaceae. Species Varieties Lecythidales. Species Subspecies Polygalales. Species Subspecies Varieties Dipsacales. Species Subspecies Varieties Rubiales. Species Subspecies Varieties Violales. There are 68 species, one subspecies, and one variety in Violales assessed as endangered. Flacourtiaceae. Species  Subspecies Passifloraceae. Species Varieties Euphorbiales. There are 93 species, four subspecies, and 15 varieties in Euphorbiales assessed as endangered. Euphorbiaceae. Species Subspecies Varieties Laurales. There are 67 species, two subspecies, and two varieties in the order Laurales assessed as endangered. Hernandiaceae. Species Subspecies Lauraceae. Species Subspecies Varieties Ebenales. There are 96 species, one subspecies, and two varieties in Ebenales assessed as endangered. Symplocaceae. Species Subspecies Varieties Celastrales. There are 43 species in the order Celastrales assessed as endangered. Myrtales. There are 227 species, four subspecies, and ten varieties in the order Myrtales assessed as endangered. Myrtaceae. Species Subspecies Varieties Melastomataceae . Species Varieties Lythraceae. Species Varieties Sapindales. There are 121 species, three subspecies, and seven varieties in the order Sapindales assessed as endangered. Rutaceae. Species Subspecies Varieties Sapindaceae. Species Varieties Anacardiaceae. Species Varieties Meliaceae. Species Subspecies Burseraceae. Species Varieties Other Sapindales. Species Varieties Asterales. Species Subspecies Varieties Magnoliales. There are 166 species and six subspecies in the order Magnoliales assessed as endangered. Magnoliaceae. Species Subspecies Annonaceae. Species Subspecies Myristicaceae. Species Subspecies Capparales. There are 30 species in Capparales assessed as endangered. Apiales. There are 63 species and one variety in the order Apiales assessed as endangered. Araliaceae. Species Varieties Gentianales. There  are 64 species and two varieties in the order Gentianales assessed as endangered. Apocynaceae. Species Varieties Loganiaceae. Species Varieties Rosales. There are 77 species, four subspecies, and four varieties in the order Rosales assessed as endangered. Brunelliaceae. Species Subspecies Cunoniaceae. Species Varieties Rosaceae. Species Subspecies Varieties Other Rosales. Species Varieties Primulales. There are 21 species in Primulales assessed as endangered. Rhamnales. Species Varieties Urticales. There are 24 species, one subspecies, and three varieties in Urticales assessed as endangered. Urticaceae. Species Varieties Moraceae. Species Subspecies Varieties Scrophulariales. There are 216 species, 11 subspecies, and two varieties in the order Scrophulariales assessed  as endangered. Oleaceae. Species Varieties Gesneriaceae. Species Subspecies Acanthaceae. Species Subspecies Lamiales. There are 55 species and three subspecies in the order Lamiales assessed as endangered. Boraginaceae. Species Subspecies Nepenthales. There are 17 species, three subspecies, and one variety in Nepenthales assessed as endangered. Sarraceniaceae. Subspecies Varieties Fabales. Species Subspecies Varieties Caryophyllales. There are 214 species and one subspecies in the order Caryophyllales assessed as endangered. Cactus. Species Subspecies Fagales. Species Varieties Monocotyledons. There are 625 species, ten subspecies, and two varieties of monocotyledon assessed as endangered. Arecales. Species Subspecies Orchidales. There are 245 species, four subspecies, and two varieties  in Orchidales assessed as endangered. Orchidaceae. Species Subspecies Varieties Liliales. There are 96 species and two subspecies in the order Liliales assessed as endangered. Aloaceae. Species Subspecies Amaryllidaceae. Species Subspecies Arales. Araceae. Species Subspecies Cyperales. There are 55 species in Cyperales assessed as endangered. Other monocotyledons. Species Subspecies