The IUCN Red List of Threatened Species, founded in 1965, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world, With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red List are produced by countries or organizations, which assess the risk of extinction to species within a political management unit.
Primula is a genus of mainly herbaceous flowering plants in the family Primulaceae. They include the familiar wildflower of banks and verges, the primrose. Other common species are P. auricula (auricula), P. veris (cowslip) and P. elatior (oxlip). These species and many others are valued for their ornamental flowers. They have been extensively cultivated and hybridised - in the case of the primrose, for many hundreds of years. Primula are native to the temperate northern hemisphere, south into tropical mountains in Ethiopia, Indonesia and New Guinea, and in temperate southern South America. Almost half of the known species are from the Himalayas.
The genus Helichrysum consists of an estimated 600 species of flowering plants in the sunflower family (Asteraceae). The type species is Helichrysum orientale. The name is derived from the Greek words ἑλίσσω and χρῡσός.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status exist and are in use at international, multi-country, national and local levels as well as for consumer use.
A rare species is a group of organisms that are very uncommon, scarce, or infrequently encountered. This designation may be applied to either a plant or animal taxon, and is distinct from the term endangered or threatened. Designation of a rare species may be made by an official body, such as a national government, state, or province. The term more commonly appears without reference to specific criteria. The IUCN does not normally make such designations, but may use the term in scientific discussion.
Xerochrysum bracteatum, commonly known as the golden everlasting or strawflower, is a flowering plant in the family Asteraceae native to Australia. Described by Étienne Pierre Ventenat in 1803, it was known as Helichrysum bracteatum for many years before being transferred to a new genus Xerochrysum in 1990. It grows as a woody or herbaceous perennial or annual shrub up to a metre (3 ft) tall with green or grey leafy foliage. Golden yellow or white flower heads are produced from spring to autumn; their distinctive feature is the papery bracts that resemble petals. The species is widespread, growing in a variety of habitats across the country, from rainforest margins to deserts and subalpine areas. The golden everlasting serves as food for various larvae of lepidopterans, and adult butterflies, hoverflies, native bees, small beetles, and grasshoppers visit the flower heads.
Sium latifolium is a species of flowering plant in the family Apiaceae known by the common names great water-parsnip, greater water-parsnip, and wideleaf waterparsnip. It is native to much of Europe, Kazakhstan, and Siberia.
A least concern (LC) species is a species which has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated but not qualified for any other category. They do not qualify as threatened, near threatened, or conservation dependent.
The flora of Saint Helena, an isolated island in the South Atlantic Ocean, is exceptional in its high level of endemism and the severe threats facing the survival of the flora. In phytogeography, it is in the phytochorion St. Helena and Ascension Region of the African Subkingdom, in the Paleotropical Kingdom.
Callitris monticola, or dwarf cypress, is a species of conifer in the Cupressaceae family. It shares the common name with several other plants. It is found only in Australia. It is threatened by habitat loss.
Juniperus barbadensis is a species of conifer in the Cupressaceae family. It is found in The Bahamas, Cuba, Haiti, Jamaica, and Saint Lucia.
Juniperus komarovii is a species of conifer in the Cupressaceae family. It is found only in China.
Juniperus saltuaria is a species of conifer in the Cupressaceae family. It is endemic to southern China and Tibet. The trees grow up to 20 metres (66 ft) high.
Calophyllum bracteatum is a species of flowering plant in the Calophyllaceae family. It is found only in Sri Lanka where it is known as වලු කින by local people.
Apium bermejoi is a critically endangered species of flowering plant in the Apiaceae family. It is not closely related to the wild form of celery, A. graveolens, being more properly placed in the genus Helosciadium in the tribe Oenantheae. A. bermejoi is now endemic to a single location in the northeast part of Menorca in the Balearic Islands of Spain. Across two populations, there are fewer than a hundred individuals surviving. Its natural habitat is Mediterranean-type shrubby vegetation. It is threatened by habitat loss.
Sium burchellii, known commonly as dwarf jellico, is a species of flowering plant in the family Apiaceae. It is endemic to Saint Helena. It grows on steep island cliffs. It is threatened by the fragmentation of its small populations, introduced species of plants, landslides, and possibly hybridization with Sium bracteatum.
Sium is a genus of flowering plants in the family Apiaceae. It is widely distributed across Europe, Asia, Africa, and North America. Plants of this genus are commonly called water parsnips.
Sium suave is a perennial wildflower in the family Apiaceae. It is native to many areas of both Asia and North America. The common name water parsnip is due to its similarity to parsnip and its wetland habitat. The alternate common name hemlock waterparsnip is due to its similarity to spotted water hemlock.
Viburnum bracteatum is a species of flowering plant in the Adoxaceae known by the common names bracted arrowwood and limerock arrowwood. It is native to the southeastern United States, where it is limited to Alabama, Georgia, and Tennessee. Some authors include Viburnum ozarkense in this species, which would expand its distribution westward. Other authors include V. ozarkense in Viburnum molle, or retain it as a distinct species.
Acantholimon gabrieljaniae, or Gabrielyan's prickly thrift, is a species of leadwort that is endemic to Armenia. It is found only in the Sevan floristic region, and is only known from its type specimen. It may be related or synonymous to A. bracteatum. It grows on limestone slopes at elevations around 2,000 m. It is threatened by nomadic livestock farming, which can degrade and destroy its habitat. The type specimen was found in the Sevan National Park, and so is afforded some protection.
