In September 2016, the International Union for Conservation of Nature (IUCN) listed 3654 endangered plant species. Of all evaluated plant species, 17% 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 extinction". 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.

Hornworts

Mosses

Liverworts

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

Hymenophyllales

Cyatheales

Salviniales

Isoetopsida

Lycopodiopsida

Gymnosperms

There are 163 species, seven subspecies, and 29 varieties of gymnosperm assessed as endangered.

Ginkgos

Cycads

Species Subspecies

Conifers

Species Subspecies Varieties

Gnetopsida

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.

Piperaceae

Chloranthaceae

Campanulales

Campanulaceae

Species Subspecies

Aristolochiales

Theales

There are 174 species, 12 subspecies, and two varieties in Theales assessed as endangered.

Dipterocarpaceae

Species Subspecies

Theaceae

Species Varieties

Actinidiaceae

Guttiferae

Species Subspecies Varieties

Other Theales species

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

Bombacaceae

Sarcolaenaceae

Tiliaceae

Elaeocarpaceae

Geraniales

Lecythidales

Species Subspecies

Polygalales

Species Subspecies Varieties

Santalales

Proteales

Dipsacales

Species Subspecies Varieties

Plumbaginales

Rubiales

Species Subspecies Varieties

Violales

There are 68 species, one subspecies, and one variety in Violales assessed as endangered.

Flacourtiaceae

Species Subspecies

Violaceae

Passifloraceae

Species Varieties

Other Violales species

Euphorbiales

There are 93 species, four subspecies, and 15 varieties in Euphorbiales assessed as endangered.

Buxaceae

Euphorbiaceae

Species Subspecies Varieties

Laurales

There are 67 species, two subspecies, and two varieties in the order Laurales assessed as endangered.

Gomortegaceae

Monimiaceae

Hernandiaceae

Species Subspecies

Lauraceae

Species Subspecies Varieties

Cucurbitales

Begoniaceae

Ebenales

There are 95 species, one subspecies, and two varieties in Ebenales assessed as endangered.

Symplocaceae

Species Subspecies Varieties

Sapotaceae

Ebenaceae

Celastrales

There are 43 species in the order Celastrales assessed as endangered.

Icacinaceae

Hollies

Celastraceae

Dichapetalaceae

Myrtales

There are 227 species, four subspecies, and ten varieties in the order Myrtales assessed as endangered.

Myrtaceae

Species Subspecies Varieties

Melastomataceae

Species Varieties

Combretaceae

Thymelaeaceae

Lythraceae

Species Varieties

Onagraceae

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.

Canellaceae

Winteraceae

Magnoliaceae

Species Subspecies

Annonaceae

Species Subspecies

Myristicaceae

Species Subspecies

Brassicales

There are 30 species in Capparales assessed as endangered.

Capparaceae

Cruciferae

Apiales

There are 63 species and one variety in the order Apiales assessed as endangered.

Araliaceae

Species Varieties

Umbelliferae

Gentianales

There are 64 species and two varieties in the order Gentianales assessed as endangered.

Apocynaceae

Species Varieties

Loganiaceae

Species Varieties

Asclepiadaceae

Gentianaceae

Rosales

There are 77 species, four subspecies, and four varieties in the order Rosales assessed as endangered.

Chrysobalanaceae

Brunelliaceae

Species Subspecies

Pittosporaceae

Cunoniaceae

Species Varieties

Rosaceae

Species Subspecies Varieties

Other Rosales

Species Varieties

Primulales

There are 21 species in Primulales assessed as endangered.

Myrsinaceae

Primulaceae

Rhamnales

Species Varieties

Urticales

There are 24 species, one subspecies, and three varieties in Urticales assessed as endangered.

Urticaceae

Species Varieties

Ulmaceae

Cecropiaceae

Moraceae

Species Subspecies Varieties

Solanales

Scrophulariales

There are 216 species, 11 subspecies, and two varieties in the order Scrophulariales assessed as endangered.

Oleaceae

Species Varieties

Buddlejaceae

Gesneriaceae

Species Subspecies

Bignoniaceae

Acanthaceae

Species Subspecies

Scrophulariaceae

Lentibulariaceae

Lamiales

There are 55 species and three subspecies in the order Lamiales assessed as endangered.

Verbenaceae

Labiatae

Boraginaceae

Species Subspecies

Linderniaceae

Nepenthales

There are 17 species, three subspecies, and one variety in Nepenthales assessed as endangered.

Nepenthaceae

Droseraceae

Sarraceniaceae

Subspecies Varieties

Ranunculales

Polygonales

Podostemales

Fabales

Species Subspecies Varieties

Caryophyllales

There are 214 species and one subspecies in the order Caryophyllales assessed as endangered.

Caryophyllaceae

Amaranthaceae

Nyctaginaceae

Chenopodiaceae

Portulacaceae

Cactus

Species Subspecies

Aizoaceae

Fagales

Species Varieties

Other dicotyledon species

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

Burmanniaceae

Cyclanthales

Bromeliales

Liliales

There are 96 species and two subspecies in the order Liliales assessed as endangered.

Dracaenaceae

Iridaceae

Aloaceae

Species Subspecies

Amaryllidaceae

Species Subspecies

Liliaceae

Other Liliales species

Arales

Araceae

Species Subspecies

Zingiberales

Eriocaulales

Commelinales

Cyperales

There are 55 species in Cyperales assessed as endangered.

Gramineae

Cyperaceae

Najadales

Other monocotyledons

Species Subspecies