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As of September 2016, the
International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
(IUCN) lists 2493 critically endangered
plant Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclud ...
species, including 145 which are tagged as ''possibly extinct'' or ''possibly extinct in the wild''. 11% of all evaluated plant species are listed as critically endangered. The IUCN also lists 89 subspecies and 70 varieties as critically endangered. Additionally 1674 plant species (7.6% of those evaluated) are listed as ''
data deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessaril ...
'', 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 critically endangered plant species, subspecies and varieties evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.


Algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...


Bryophytes The Bryophyta s.l. are a proposed taxonomic division containing three groups of non-vascular land plants (embryophytes): the liverworts, hornworts and mosses. Bryophyta s.s. consists of the mosses only. They are characteristically limited i ...

There are 23 bryophyte species assessed as critically endangered.


Moss Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hor ...
es


Liverworts The Marchantiophyta () are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of ge ...


Pteridophytes A pteridophyte is a vascular plant (with xylem and phloem) that disperses spores. Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden. Ferns, ...

There are 67 species and three varieties of pteridophyte assessed as critically endangered.


Leptosporangiate ferns The Polypodiidae, commonly called leptosporangiate ferns, formerly Leptosporangiatae, are one of four subclasses of ferns, and the largest of these, being the largest group of living ferns, including some 11,000 species worldwide. The group has ...

There are 54 species and three varieties in the class Polypodiopsida assessed as critically endangered.


Polypodiales The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. Description Polypodiale ...

There are 49 species and three varieties in the order Polypodiales assessed as critically endangered.


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Aspleniaceae The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable changes. In particular, there is a narrow circumscription, Aspleniaceae ...

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= Dryopteridaceae

= Species Varieties


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Polypodiaceae Polypodiaceae is a family of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family includes around 65 genera and an estimated 1,650 species and is placed in the order Polypodiales, suborder Polypodiineae. A broader ...

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=Other Polypodiales species

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Hymenophyllales The Hymenophyllaceae, the filmy ferns and bristle ferns, are a family of two to nine genera (depending on classification system) and about 650 known species of ferns, with a cosmopolitan distribution, subcosmopolitan distribution, but generally r ...


Salviniales The order Salviniales (formerly known as the Hydropteridales and including the former Marsileales) is an order of ferns in the class Polypodiopsida. Description Salviniales are all aquatic and differ from all other ferns in being heterosporous, ...

*'' Marsilea fadeniana''


Isoetopsida Lycopodiopsida is a class of vascular plants known as lycopods, lycophytes or other terms including the component lyco-. Members of the class are also called clubmosses, firmosses, spikemosses and quillworts. They have dichotomously branching s ...


Other pteridophyte species


Gymnosperm The gymnosperms ( lit. revealed seeds) are a group of seed-producing plants that includes conifers, cycads, ''Ginkgo'', and gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in el, γυμνό ...
s

There are 81 species, five subspecies, and 13 varieties of gymnosperm assessed as critically endangered.


Cycads Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or ...

Species Subspecies


Conifers Conifers are a group of cone-bearing seed plants, a subset of gymnosperms. Scientifically, they make up the division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class, Pinopsida. All extan ...

Species Subspecies * ''Abies delavayi'' subsp. ''fansipanensis'', Fansipan fir * ''Pinus torreyana'' subsp. ''torreyana'' Varieties


Dicotyledon The dicotyledons, also known as dicots (or, more rarely, dicotyls), are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, t ...
s

There are 1895 species, 78 subspecies, and 49 varieties of dicotyledon assessed as critically endangered.


Piperales Piperales is an order of flowering plants (4,170 recognized species). It necessarily includes the family Piperaceae but other taxa have been included or disincluded variously over time. Well-known plants which may be included in this order inclu ...


Piperaceae The Piperaceae (), also known as the pepper family, are a large family of flowering plants. The group contains roughly 3,600 currently accepted species in 5 genera. The vast majority of species can be found within the two main genera: ''Piper'' ( ...

Species Varieties * ''Piper amalago'' var. ''variifolium''


Campanulales

There are 62 species and 12 subspecies in Campanulales assessed as critically endangered.


Campanulaceae

Species Subspecies


Goodeniaceae Goodeniaceae is a family (biology), family of flowering plants in the Order (biology), order Asterales. It contains about 404 species in twelve genera. The family is distributed mostly in Australia, except for the genus ''Scaevola (plant), Scaevo ...

*''
Scaevola socotraensis ''Scaevola socotraensis'' is a species of flowering plant in the family Goodeniaceae. It is Endemism, endemic to Socotra off the coast of mainland Yemen. There are just a few individuals of this critically endangered plant growing at freshwater s ...
''


Aristolochiales Aristolochiales is an order of flowering plants. It is not recognised in the APG or APG II systems, in which it is considered a synonym of Piperales. It also is not recognized in the Thorne system. In the Cronquist, Dahlgren, Goldberg and R ...


Theales Theales is a botanical name at the rank of order. Early classifications such as that of Dahlgren placed the Theales in the superorder Theiflorae (also called Theanae). The name was used by the Cronquist system for an order placed in subclass Dille ...

There are 295 species and 23 subspecies in Theales assessed as critically endangered.


Dipterocarpaceae Dipterocarpaceae is a family of 16 genera and about 695 known species of mainly tropical lowland rainforest trees. The family name, from the type genus ''Dipterocarpus'', is derived from Greek (''di'' = two, ''pteron'' = wing and ''karpos'' = fru ...

Species Subspecies


Theaceae Theaceae (), the tea family, is a family (biology), family of flowering plants comprising shrubs and trees, including the economically important tea plant, and the ornamental camellias. It can be described as having from seven to 40 genus, genera ...


Guttiferae The Clusiaceae or Guttiferae Juss. (1789) (''nom. alt. et cons.'' = alternative and valid name) are a family of plants including 13 genera and ca 750 species. Several former members of Clusiacae are now placed in Calophyllaceae and Hypericacea ...


Other Theales species


Malvales The Malvales are an order of flowering plants. As circumscribed by APG II-system, the order includes about 6000 species within 9 families. The order is placed in the eurosids II, which are part of the eudicots. The plants are mostly shrubs and ...

Species Subspecies * ''Elaeocarpus submonoceras'' subsp. ''oliganthus'' * ''Hibiscus waimeae'' subsp. ''hannerae'' Varieties * ''Bombax insigne'' var. ''polystemon''


Geraniales Geraniales is a small order of flowering plants, included within the rosid subclade of eudicots. The largest family in the order is Geraniaceae with over 800 species. In addition, the order includes the smaller Francoaceae with about 40 species. ...


Lecythidales Lecythidales is a botanical name at the rank of order. The name was used by the Cronquist system for an order placed in subclass Dilleniidae. This order included only the family Lecythidaceae, which family now (in the APG II system) is placed i ...

Species Subspecies * ''Eschweilera piresii'' subsp. ''viridipetala''


Polygalales The Fabales are an order of flowering plants included in the rosid group of the eudicots in the Angiosperm Phylogeny Group II classification system. In the APG II circumscription, this order includes the families Fabaceae or legumes (including ...

Species Subspecies * ''Byrsonima nemoralis'' subsp. ''dressleri''


Santalales The Santalales are an order of flowering plants with a cosmopolitan distribution, but heavily concentrated in tropical and subtropical regions. It derives its name from its type genus ''Santalum'' (sandalwood). Mistletoe is the common name for a ...

Species Varieties * ''Santalum insulare'' var. ''margaretae'' * ''Santalum insulare'' var. ''raivavense''


Proteales Proteales is an order of flowering plants consisting of three (or four) families. The Proteales have been recognized by almost all taxonomists. The representatives of the Proteales are very different from each other. The order contains plants ...

Species Subspecies * ''Elaeagnus conferta'' subsp. ''dendroidea''


Dipsacales


Plumbaginales Plumbaginales is an order of flowering plants. The order is recognized by several systems, such as the Wettstein system, last revised in 1935, the Engler system, in its update of 1964 and the Cronquist system, 1981. Its circumscription is typical ...


Rubiales Rubiales was an order of flowering plants in the Cronquist system, including the families Rubiaceae and Theligonaceae. The latest APG system (2009) does not recognize this order and places the families within Gentianales Gentianales is an or ...

Species Subspecies Varieties * ''Chassalia coriacea'' var. ''johnstonii'' * ''Coprosma rapensis'' var. ''benefica'', Red berry


Violales Violales is a botanical name of an order of flowering plants and takes its name from the included family Violaceae; it was proposed by Lindley (1853). The name has been used in several systems, although some systems used the name Parietales f ...

Species Subspecies * ''Cistus heterophyllus'' subsp. ''carthaginensis'' * ''Viola chamissoniana'' subsp. ''chamissoniana''


Euphorbiales Euphorbiales is an order of flowering plants that is not currently recognized in the most authoritative modern treatment of plant taxonomy. In the APG II system (2003) the plants involved are mostly placed in the order Malpighiales. A well kno ...

There are 74 species, two subspecies, and ten varieties in Euphorbiales assessed as critically endangered.


Peraceae Peraceae Klotzsch is a family of flowering plants in the eudicot order Malpighiales. The family was segregated from the Euphorbiaceae by Johann Friedrich Klotzsch in 1859, and its uniqueness was affirmed by the Royal Botanic Gardens, Kew's Eup ...

*'' Chaetocarpus pubescens''


Buxaceae

*''
Buxus vahlii ''Buxus vahlii'', or Vahl's boxwood, is a rare species of plant in the Buxaceae, boxwood family. It is native to Puerto Rico and St. Croix in the United States Virgin Islands, U.S. Virgin Islands, where it is known from no more than four populati ...
'', Vahl's boxwood


Euphorbiaceae

Species Subspecies * ''Euphorbia cylindrifolia'' subsp. ''tuberifera'' * ''Euphorbia stenoclada'' subsp. ''ambatofinandranae'' Varieties


Laurales The Laurales are an order of flowering plants. They are magnoliids, related to the Magnoliales. The order includes about 2500-2800 species from 85-90 genera, which comprise seven families of trees and shrubs. Most of the species are tropical and ...

There are 40 species in the order Laurales assessed as critically endangered.


Monimiaceae The Monimiaceae is a family (biology), family of flowering plants in the magnoliid Order (biology), order Laurales.Peter F. Stevens (2001 onwards). "Monimiaceae" At: Angiosperm Phylogeny Website. At: Botanical Databases At: Missouri Botanical Gar ...


Hernandiaceae The Hernandiaceae are a family of flowering plants (angiosperms) in the order Laurales. Consisting of five genera with about 58 known species, they are distributed over the world's tropical areas, some of them widely distributed in coastal areas ...

*''
Hernandia cubensis ''Hernandia cubensis'' is a species of plant in the Hernandiaceae family. It is endemic to Cuba. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habita ...
'' *''
Hernandia temarii ''Hernandia temarii'' is a species of plant in the Hernandiaceae family. It is endemic to Tahiti in the Society Islands The Society Islands (french: Îles de la Société, officially ''Archipel de la Société;'' ty, Tōtaiete mā) are an arc ...
''


Lauraceae Lauraceae, or the laurels, is a plant family that includes the true laurel and its closest relatives. This family comprises about 2850 known species in about 45 genera worldwide (Christenhusz & Byng 2016 ). They are dicotyledons, and occur ma ...


Cucurbitales

Species Subspecies * ''Begonia quadrialata'' subsp. ''dusenii''


Ebenales

There are 45 species in Ebenales assessed as critically endangered.


Symplocaceae Symplocaceae is a family of flowering plants in the order Ericales, including two genera, ''Symplocos ''Symplocos'' is a genus of flowering plants in the order Ericales. It contains about 300 species distributed in Asia and the Americas. Man ...

*'' Symplocos molinae'' *'' Symplocos versicolor''


Sapotaceae 240px, '' Madhuca longifolia'' var. ''latifolia'' in Narsapur, Medak district, India The Sapotaceae are a family (biology), family of flowering plants belonging to the order (biology), order Ericales. The family includes about 800 species of ev ...


Ebenaceae The Ebenaceae are a family of flowering plants belonging to order Ericales. The family includes ebony and persimmon among about 768 species of trees and shrubs. It is distributed across the tropical and warmer temperate regions of the world. It ...


Styracaceae The Styracaceae are a small family of flowering plants in the order Ericales, containing 12 genera and about 160 species of trees and shrubs. The family occurs in warm temperate and subtropical regions of the Northern Hemisphere. The family is c ...

*''
Styrax portoricensis ''Styrax portoricensis'', locally known as ''palo de jazmin'', is a species of flowering plant in the family Styracaceae. It is endemic to Puerto Rico. It is one of the rarest endemic trees of Puerto Rico and is known to occur only in the northea ...
''


Celastrales The Celastrales are an order of flowering plants found throughout the tropics and subtropics, with only a few species extending far into the temperate regions. The 1200"Lepidobotryaceae", "Parnassiaceae", and "Celastraceae" In: Klaus Kubitzki (ed ...

There are 29 species and two subspecies in the order Celastrales assessed as critically endangered.


Icacinaceae The Icacinaceae, also called the white pear family, are a family of flowering plants,"Icacinaceae" At: Angiosperm Phylogeny Website At: Missouri Botanical Garden Website (see ''External links'' below). consisting of trees, shrubs, and lianas, pri ...


Hollies The Hollies are a British pop rock band, formed in 1962. One of the leading British groups of the 1960s and into the mid-1970s, they are known for their distinctive three-part vocal harmony style. Allan Clarke and Graham Nash founded the band ...

Species Subspecies * ''Ilex perado'' subsp. ''iberica'' * ''Ilex perado'' subsp. ''lopezlilloi''


Celastraceae


Dichapetalaceae

*'' Dichapetalum korupinum'' *'' Dichapetalum letouzeyi''


Myrtales The Myrtales are an order of flowering plants placed as a sister to the eurosids II clade as of the publishing of the ''Eucalyptus grandis'' genome in June 2014. The APG III system of classification for angiosperms still places it within the eur ...

There are 97 species and five varieties in the order Myrtales assessed as critically endangered.


Myrtaceae Myrtaceae, the myrtle family, is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, and eucalyptus are some notable members of this group. All speci ...

Species Varieties * ''Eugenia harrisii'' var. ''grandifolia'' * ''Myrrhinium atropurpureum'' var. ''atropurpureum''


Melastomataceae Melastomataceae is a family of dicotyledonous flowering plants found mostly in the tropics (two-thirds of the genera are from the New World tropics) comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, sh ...


Combretaceae

Species *''
Combretum tenuipetiolatum ''Combretum'', the bushwillows or combretums, make up the type genus of the family Combretaceae. The genus comprises about 272 species of trees and shrubs, most of which are native to tropical and southern Africa, about 5 to Madagascar, but the ...
'' Varieties


Thymelaeaceae The Thymelaeaceae are a cosmopolitan family of flowering plants composed of 50 genera (listed below) and 898 species.Zachary S. Rogers (2009 onwards)A World Checklist of Thymelaeaceae (version 1) Missouri Botanical Garden Website, St. Louis. It ...


Water caltrops

*'' Trapa colchica'', Colchis water-chestnut


Lythraceae Lythraceae is a family of flowering plants, including 32 genera, with about 620 species of herbs, shrubs, and trees. The larger genera include ''Cuphea'' (275 spp.), ''Lagerstroemia'' (56), ''Nesaea'' (50), ''Rotala'' (45), and ''Lythrum'' (35). ...


Onagraceae The Onagraceae are a family of flowering plants known as the willowherb family or evening primrose family. They include about 650 species of herbs, shrubs, and treesEpilobium numidicum ''Epilobium'' is a genus of flowering plants in the family Onagraceae, containing about 197 species. The genus has a worldwide distribution. It is most prevalent in the subarctic, temperate and subantarctic regions, whereas in the subtropics and ...
''


Sapindales Sapindales is an order of flowering plants. Well-known members of Sapindales include citrus; maples, horse-chestnuts, lychees and rambutans; mangos and cashews; frankincense and myrrh; mahogany and neem. The APG III system of 2009 includes it ...

There are 70 species, three subspecies, and five varieties in the order Sapindales assessed as critically endangered.


Rutaceae The Rutaceae is a family, commonly known as the rueRUTACEAE
in BoDD – Botanical Derm ...

Species Subspecies * ''Pilocarpus goudotianus'' subsp. ''heterochromus'' Varieties * ''Zanthoxylum dipetalum'' var. ''tomentosum''


Aceraceae

Species *''
Acer hainanense ''Acer laevigatum'', the smooth maple or Nepal maple, is an atypical species of maple native to southern China (Guizhou, Hong Kong, Hubei, Shanxi, Sichuan, Xizang, Yunnan), northern India (Arunachal Pradesh, Sikkim), northern Myanmar, Nepal, and ...
'' *''
Acer leipoense ''Acer leipoense'' is a species of maple, endemic to southwestern Sichuan in southwestern China. It is an endangered species, growing at altitudes of 2,000–2,700 m. It is a deciduous small tree growing to 8 meters tall. The leaves ...
'' Varieties * ''Acer buergerianum'' var. ''formosanum'', Taiwan trident maple * ''Acer oblongum'' var. ''membranaceum''


Sapindaceae The Sapindaceae are a family of flowering plants in the order Sapindales known as the soapberry family. It contains 138 genera and 1858 accepted species. Examples include horse chestnut, maples, ackee and lychee. The Sapindaceae occur in tempera ...

Species Varieties * ''Alectryon macrococcus'' var. ''auwahiensis'' * ''Alectryon macrococcus'' var. ''macrococcus''


Zygophyllaceae Zygophyllaceae is a family of flowering plants that contains the bean-caper and caltrop. The family includes around 285 species in 22 genera. Plants in the family Zygophyllaceae may be trees, shrubs, or herbs. They are often found in dry habita ...


Anacardiaceae


Meliaceae Meliaceae, the mahogany family, is a flowering plant family of mostly trees and shrubs (and a few herbaceous plants, mangroves) in the order Sapindales. They are characterised by alternate, usually pinnate leaves without stipules, and by syncarp ...

Species Subspecies * ''Trichilia trifolia'' subsp. ''pteleaefolia'' * ''Turraea mombassana'' subsp. ''schliebenii''


Burseraceae The Burseraceae are a moderate-sized family of 17-19 genera and about 540 species of flowering plants. The actual numbers differ according to the time period in which a given source is written describing this family. The Burseraceae are also know ...

*'' Canarium whitei'' *'' Commiphora wightii''


Asterales

Species Subspecies Varieties


Magnoliales The Magnoliales are an order of flowering plants. Classification The Magnoliales include six families: * Annonaceae (custard apple family, over 2000 species of trees, shrubs, and lianas; mostly tropical but some temperate) * Degeneriaceae (two ...

There are 63 species and three subspecies in the order Magnoliales assessed as critically endangered.


Canellaceae

*''
Pleodendron macranthum ''Pleodendron macranthum'' (chupacallos) is a rare species of tree in the family Canellaceae. It is endemic to Puerto Rico, where there are only three tiny populations remaining. Two individual plants are located in El Yunque and 8 to 10 plants ...
''


Magnoliaceae The Magnoliaceae () are a flowering plant family, the magnolia family, in the order Magnoliales. It consists of two genera: ''Magnolia'' and ''Liriodendron'' (tulip trees). Unlike most angiosperms, whose flower parts are in whorls (rings), the ...

Species Subspecies * ''Magnolia cubensis'' subsp. ''acunae'' * ''Magnolia virginiana'' subsp. ''oviedoae''


Annonaceae

Species Subspecies * ''Artabotrys modestus'' subsp. ''modestus''


Myristicaceae The Myristicaceae are a family of flowering plants native to Africa, Asia, Pacific islands, and the Americas and has been recognized by most taxonomists. It is sometimes called the "nutmeg family", after its most famous member, ''Myristica fragra ...


Capparales

There are 30 species and one variety in Capparales assessed as critically endangered.


Capparaceae


Cruciferae

Species Varieties * ''Aethionema grandiflorum'' var. ''sintenisii'', Persian stonecress


Apiales

There are 51 species and two varieties in the order Apiales assessed as critically endangered.


Araliaceae The Araliaceae are a family of flowering plants composed of about 43 genera and around 1500 species consisting of primarily woody plants and some herbaceous plants. The morphology of Araliaceae varies widely, but it is predominantly distinguisha ...

Species Varieties * ''Polyscias sechellarum'' var. ''contracta'' * ''Polyscias sechellarum'' var. ''curiosae''


Umbelliferae Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus ''Apium'' and commonly known as the celery, carrot or parsley family, or simply as umbellifers. It is the 16th-largest family of flowering plants ...


Gentianales Gentianales is an order of flowering plants, included within the asterid clade of eudicots. It comprises more than 20,000 species in about 1,200 genera in 5 families. More than 80% of the species in this order belong to the family Rubiaceae. Ma ...

There are 41 species, two subspecies, and one variety in the order Gentianales assessed as critically endangered.


Apocynaceae Apocynaceae (from ''Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison Members of the ...


Loganiaceae The Loganiaceae are a family of flowering plants classified in order Gentianales. The family includes up to 13 genera, distributed around the world's tropics. There are not any great morphological characteristics to distinguish these taxa from o ...

Species Varieties * ''Labordia tinifolia'' var. ''wahiawaensis''


Asclepiadaceae The Asclepiadoideae are a subfamily of plants in the family Apocynaceae. Formerly, they were treated as a separate family under the name Asclepiadaceae, e.g. by APG II, and known as the milkweed family. They form a group of perennial herbs, twin ...

Species Subspecies * ''Ceropegia decidua'' subsp. ''pretoriensis'' * ''Pentarrhinum abyssinicum'' subsp. ''ijimense''


Gentianaceae Gentianaceae is a family of flowering plants of 103 genera and about 1600 species. Etymology The family takes its name from the genus '' Gentiana'', named after the Illyrian king Gentius. Distribution Distribution is cosmopolitan. Characteri ...


Rosales Rosales () is an order of flowering plants. Peter F. Stevens (2001 onwards). "Rosales". At: Trees At: Angiosperm Phylogeny Website. At: Missouri Botanical Garden Website. (see ''External links'' below) It is sister to a clade consisting of Faga ...

There are 48 species, two subspecies, and one variety in the order Rosales assessed as critically endangered.


Chrysobalanaceae


Rosaceae Rosaceae (), the rose family, is a medium-sized family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus ''Rosa''. Among the most species-rich genera are ''Alchemilla'' (270), ''Sorbus ...

Species Subspecies * ''Alchemilla fischeri'' subsp. ''camerunensis'' * ''Polylepis tomentella'' subsp. ''nana''


Other Rosales

Species Varieties * ''Geissois ternata'' var. ''serrata''


Primulales Primulales was an order of flowering plants. This order was recognized in several systems with little variation in circumscription (see Bentham & Hooker, Engler and Wettstein system). In the classification system of Dahlgren the Primulales wer ...

There are 28 species and one variety in Primulales assessed as critically endangered.


Myrsinaceae Myrsinoideae is a subfamily of the family Primulaceae in the order Ericales. It was formerly recognized as the family Myrsinaceae, or the myrsine family, consisting of 35 genera and about 1000 species. It is widespread in temperate to tropical ...


Theophrastaceae Theophrastoideae is a small subfamily of flowering plants in the family Primulaceae. It was formerly recognized as a separate family Theophrastaceae. As previously circumscribed, the family consisted of eight genera and 95 species of trees or shr ...

Species *''
Clavija parvula ''Clavija'' is a genus of flowering plants belonging to the family Primulaceae. Its native range is Tropical America. Species: *''Clavija biborrana'' *''Clavija caloneura'' *''Clavija cardenasii'' *''Clavija cauliflora'' *''Clavija clavat ...
'' Varieties * ''Jacquinia macrantha'' var. ''clarendonensis''


Primulaceae The Primulaceae , commonly known as the primrose family (but not related to the Onagraceae, evening primrose family), are a family (biology), family of Herbaceous plant, herbaceous and woody flowering plants including some favourite garden plants ...


Rhamnales The Rhamnales Lindl. are an order of dicotyledon plants in the subclass Rosidae. In the Cronquist system, the following families were placed here: * Family Elaeagnaceae – (Oleaster family) * Family Leeaceae * Family Rhamnaceae (buckthorn family ...

Species Varieties * ''Cayratia pedata'' var. ''glabra''


Urticales Urticales is an Order (biology), order of flowering plants. Before molecular phylogenetics became an important part of plant taxonomy, Urticales was recognized in many, perhaps even most, list of systems of plant taxonomy, systems of History of pla ...

Species Varieties * ''Neraudia angulata'' var. ''angulata'' * ''Neraudia angulata'' var. ''dentata''


Solanales The Solanales are an order of flowering plants, included in the asterid group of dicotyledons. Some older sources used the name Polemoniales for this order. Taxonomy Under the older Cronquist system, the latter three families were placed else ...

Species Varieties * ''Ipomoea prismatosyphon'' var. ''trifida''


Scrophulariales The order Lamiales (also known as the mint order) are an order in the asterid group of dicotyledonous flowering plants. It includes about 23,810 species, 1,059 genera, and is divided into about 25 families. These families include Acanthaceae, Bign ...

There are 75 species, two subspecies, and one variety in the order Scrophulariales assessed as critically endangered.


Oleaceae Oleaceae, also known as the olive family, is a taxonomic family of flowering shrubs, trees, and a few lianas in the order Lamiales, It presently comprises 28 genera, one of which is recently extinct.Peter S. Green. 2004. "Oleaceae". pages 296-30 ...


Gesneriaceae Gesneriaceae, the gesneriad family, is a family of flowering plants consisting of about 152 genera and ca. 3,540 species in the tropics and subtropics of the Old World (almost all Didymocarpoideae) and the New World (most Gesnerioideae), with ...

Species Subspecies * ''Saintpaulia ionantha'' subsp. ''grandifolia'' * ''Saintpaulia ionantha'' subsp. ''rupicola'' Varieties * ''Gesneria scabra'' var. ''fawcettii''


Bignoniaceae


Acanthaceae


Scrophulariaceae The Scrophulariaceae are a family of flowering plants, commonly known as the figwort family. The plants are annual and perennial herbs, as well as shrubs. Flowers have bilateral (zygomorphic) or rarely radial (actinomorphic) symmetry. The Scr ...


Other Scrophulariales species


Lamiales The order Lamiales (also known as the mint order) are an order in the asterid group of dicotyledonous flowering plants. It includes about 23,810 species, 1,059 genera, and is divided into about 25 families. These families include Acanthaceae, Bi ...

There are 64 species and three varieties in the order Lamiales assessed as critically endangered.


Verbenaceae The Verbenaceae ( ), the verbena family or vervain family, is a family of mainly tropical flowering plants. It contains trees, shrubs, and herbs notable for heads, spikes, or clusters of small flowers, many of which have an aromatic smell. The ...


Labiatae The Lamiaceae ( ) or Labiatae are a family of flowering plants commonly known as the mint, deadnettle or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mint, rosemary, sage, savory ...

Species Varieties


Boraginaceae Boraginaceae, the borage or forget-me-not family, includes about 2,000 species of shrubs, trees and herbs in 146, to 156 genera with a worldwide distribution. The APG IV system from 2016 classifies the Boraginaceae as single family of the order ...


Nepenthales Nepenthales (Nepenthales Bercht. & J.Presl) is an order of carnivorous flowering plants in the Cronquist system of plant classification. Cronquist system The order was placed in the subclass Dilleniidae, which in the 1981 version of this sys ...

Species Subspecies * ''Sarracenia rubra'' subsp. ''alabamensis''


Ranunculales Ranunculales is an order of flowering plants. Of necessity it contains the family Ranunculaceae, the buttercup family, because the name of the order is based on the name of a genus in that family. Ranunculales belongs to a paraphyletic group kno ...

Species Varieties * ''Cissampelos nigrescens'' var. ''cardiophylla''


Polygonales Polygonales was an order of flowering plants recognized by several older systems such as the Wettstein system, last revised in 1935, the Engler system, in its update of 1964, and the Cronquist system, 1981. Its circumscription was typically: * or ...


Podostemales Podostemaceae (riverweed family), a family in the order Malpighiales, comprise about 50 genera and species of more or less thalloid aquatic herbs. Distribution and habitat They are found mostly in tropical and subtropical areas worldwide. ...


Fabales

Species Subspecies * ''Astragalus macrocarpus'' subsp. ''lefkarensis'', Lefkara milk-vetch Varieties * ''Humboldtia unijuga'' var. ''trijuga''


Caryophyllales

There are 145 species, two subspecies, and one variety in the order Caryophyllales assessed as critically endangered.


Caryophyllaceae Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactacea ...

Species Subspecies * ''Moehringia intricata'' subsp. ''tejedensis''


Cactus A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Greek ...

Species Subspecies * ''Ariocarpus bravoanus'' subsp. ''bravoanus''


Other Caryophyllales

Species Varieties * ''Achyranthes splendens'' var. ''rotundata''


Fagales

Species Subspecies * ''Betula lenta'' subsp. ''uber'', Virginia round-leaf birch * ''Betula procurva'' subsp. ''schugnanica''


Other dicotyledons

Species Varieties * ''Rhododendron protistum'' var. ''giganteum''


Monocotyledon Monocotyledons (), commonly referred to as monocots, (Lilianae ''sensu'' Chase & Reveal) are grass and grass-like flowering plants (angiosperms), the seeds of which typically contain only one embryonic leaf, or cotyledon. They constitute one of ...
s

There are 421 species, six subspecies, and five varieties of monocotyledon assessed as critically endangered.


Arecales Arecales is an order of flowering plants. The order has been widely recognised only for the past few decades; until then, the accepted name for the order including these plants was Principes. Taxonomy The APG IV system of 2016 places Dasypogona ...

Species Varieties


Orchidales {{Unreferenced, date=December 2009 ''Orchidales'' is an order of flowering plants. In taxonomical systems, this is a relatively recent name as early systems used descriptive botanical names for the order containing the orchids. The Bentham & H ...

There are 167 species and one subspecies in Orchidales assessed as critically endangered.


Orchidaceae Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...

Species Subspecies * ''Cynorkis buchwaldiana'' subsp. ''buchwaldiana''


Burmanniaceae Burmanniaceae is a Family (biology), family of flowering plants, consisting of 99 species of herbaceous plants in eight genera. Description These plants are annual or perennial herbs, with generally unbranched stems, some lacking leaves. Some m ...


Pandanales Pandanales, the pandans or screw-pines, is an order of flowering plants placed in the monocot clade in the Angiosperm Phylogeny Group and Angiosperm Phylogeny Web systems. Within the monocots Pandanales are grouped in the lilioid monocots wh ...


Bromeliales


Liliales Liliales is an order of monocotyledonous flowering plants in the Angiosperm Phylogeny Group and Angiosperm Phylogeny Web system, within the lilioid monocots. This order of necessity includes the family Liliaceae. The APG III system (2009) place ...

Species Subspecies * ''Narcissus nevadensis'' subsp. ''enemeritoi''


Arales


Araceae

Species Subspecies * ''Arisaema heterocephalum'' subsp. ''okinawaense''


Zingiberales The Zingiberales are flowering plants forming one of four orders in the commelinids clade of monocots, together with its sister order, Commelinales. The order includes 68 genera and 2,600 species. Zingiberales are a unique though morphological ...


Eriocaulales The Poales are a large order (biology), order of flowering plants in the monocotyledons, and includes families of plants such as the Poaceae, grasses, bromeliads, and Cyperaceae, sedges. Sixteen plant families are currently recognized by botani ...


Commelinales


Cyperales The Poales are a large order of flowering plants in the monocotyledons, and includes families of plants such as the grasses, bromeliads, and sedges. Sixteen plant families are currently recognized by botanists to be part of Poales. Description ...

There are 37 species, two subspecies, and two varieties in Cyperales assessed as critically endangered.


Gramineae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and ...

Species Subspecies * ''Puccinellia distans'' subsp. ''embergeri'' * ''Puccinellia distans'' subsp. ''font-queri'' Varieties * ''Cenchrus agrimonioides'' var. ''agrimonioides''


Cyperaceae The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' w ...

Species Varieties * ''Cyperus pennatiformis'' var. ''bryanii''


Other monocotyledons

Species Subspecies * ''Najas marina'' subsp. ''arsenariensis''


See also

*
Lists of IUCN Red List critically endangered species Version 2014.2 of the IUCN Red List of Threatened Species identified 4574 Critically Endangered species, subspecies and varieties, stocks and subpopulations. For IUCN lists of critically endangered species by kingdom, see: *Animals (kingdom ...
* List of least concern plants *
List of near threatened plants As of September 2016, the International Union for Conservation of Nature (IUCN) lists 1851 near threatened plant species. 8.5% of all evaluated plant species are listed as near threatened. The IUCN also lists 51 subspecies and 73 varieties as ...
*
List of vulnerable plants As of September 2016, the International Union for Conservation of Nature (IUCN) lists 5430 Vulnerable (VU) plant species. 25% of all evaluated plant species are listed as Vulnerable. The IUCN also lists 244 subspecies and 235 varieties as Vul ...
*
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 ...
*
List of recently extinct plants As of September 2016, the International Union for Conservation of Nature (IUCN) lists 116 extinct species, 132 possibly extinct species, 35 extinct in the wild species, 13 possibly extinct in the wild species, five extinct subspecies, one extinct ...
*
List of data deficient plants As of September 2016, the International Union for Conservation of Nature (IUCN) lists 1674 data deficient plant species. 7.6% of all evaluated plant species are listed as data deficient. The IUCN also lists 18 subspecies and 57 varieties as data ...


References

*Plants Critically endangered plants {{bots, deny=BG19bot,Yobot