Amaranthus brownii is a member of the Amaranthaceae family. It is annual herb that can grow from 1 to 3 feet in height. It is the rarest of three endemic plants to the island of Nihoa in Hawaii, and is federally listed as an endangered species. About 35 specimens exist on the island. Major threats to its existence include invasive species, fire, possible hybridization with other Amaranthus species. The conservation status of a species is an indicator of the likelihood of that species continuing to survive. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also called angiosperms) are a major group of land plants. ... Magnoliopsida is the botanical name for a class: this name is formed by replacing the termination -aceae in the name Magnoliaceae by the termination -opsida (Art 16 of the ICBN). ... Families Achatocarpaceae Aizoaceae (Fig-marigold family) Amaranthaceae (amaranth family) Ancistrocladaceae Asteropeiaceae Barbeuiaceae Basellaceae (basella family) Cactaceae (cactus family) Caryophyllaceae (carnation family) Dioncophyllaceae Droseraceae (sundew family) Drosophyllaceae Frankeniaceae Molluginaceae (carpetweed family) Nepenthaceae Nyctaginaceae (four-oclock family) Physenaceae Phytolaccaceae (pokeweed family) Plumbaginaceae (plumbago family) Polygonaceae (buckwheat family) Portulacaceae (purslane family) Rhabdodendraceae... Genera See text The family Amaranthaceae, the Amaranth family, is a taxon of dicotyledon flowering plants included among the Caryophyllales and containing about 65 genera and 900 species. ... Species See text Amaranthus, also known by the common name pigweed, is a widely distributed genus of annual, short-living herb, occurring mostly in temperate and tropical regions, belonging to the Amaranth family (Amaranthaceae). ... In biology, binomial nomenclature is the formal method of naming species. ... A question mark is a punctuation mark. ... Genera See text The family Amaranthaceae, the Amaranth family, is a taxon of dicotyledon flowering plants included among the Caryophyllales and containing about 65 genera and 900 species. ... Nihoa (also known as Bird Island or Moku Manu) is a small island located 280 miles (450 km) northwest of Honolulu in the Hawaiian Islands. ... This article or section does not cite its references or sources. ... The endangered Sea Otter An endangered species is a population of organisms (usually a taxonomic species), which because it is either (a) few in number or (b) threatened by changing environmental or predation parameters, it is at risk of becoming extinct. ... Lantana Invasion of abandoned citrus plantation; Moshav Sdey Hemed, Israel; May 2, 2006 The term invasive species refers to a subset of those species defined as introduced species or non-indigenous species. ... In genetics, hybridisation is the process of mixing different species or varieties of organisms. ...

References

Endangered Species Info