Euphorbia deppeana is a rare species of flowering plant in the family Euphorbiaceae[2] known by the common names Deppe's broomspurge and Oahu sandmat. It is endemic to Oʻahu, Hawaii, where it is known from only one population[3] in moist shrublands on Nuʻuanu Pali.[4] Like other native Hawaiian euphorbs it is called ʻakoko locally.
Anisophyllum californicum Klotzsch & Garcke Chamaesyce deppeana (Boiss.) Millsp. Chamaesyce festiva (Sherff) Croizat & O.Deg. Euphorbia festiva Sherff Euphorbia pauciflora Nutt. ex Seem.
This shrub is erect or sprawling in form. The stems may exceed a meter in length and contain milky sap.[4]
The plant has never been abundant as long as the area has been surveyed for flora.[3] It was not seen for many decades and by the 1980s it was feared extinct.[3] The single known population was rediscovered in 1986 and it contained fewer than 100 plants.[3] In 1994 it was added to the United States' endangered species list.[3] By 2007 the population was estimated to have exceeded 100 plants, but they are hard to count because they grow on a sheer rock cliff in the middle of a tourist area.[3]
The species is still considered endangered because there is only a single population and it is threatened by a number of processes.[3] Several invasive plant species have moved into the area and compete with the rare native for water, light, nutrients, and physical space.[3] The most important non-native plants in the area include ironwood (Casuarina equisetifolia), Hilo grass (Paspalum conjugatum), Christmasberry (Schinus terebinthifolius), and the common guava (Psidium guajava).[1][3] Other threats to the species include fires and human interference with the plants.[1][4]
Referencesedit
^ abcSporck-Koehler, M. (2018). "Euphorbia deppeana". IUCN Red List of Threatened Species. 2018: e.T44130A83799515. doi:10.2305/IUCN.UK.2018-2.RLTS.T44130A83799515.en. Retrieved 19 November 2021.
^ ab"Euphorbia deppeana Boiss". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved September 4, 2020.
^ abcdefghiUSFWS. Chamaesyce deppeana Five Year Review. August 2, 2007.
euphorbia, deppeana, rare, species, flowering, plant, family, euphorbiaceae, known, common, names, deppe, broomspurge, oahu, sandmat, endemic, oʻahu, hawaii, where, known, from, only, population, moist, shrublands, nuʻuanu, pali, like, other, native, hawaiian,. Euphorbia deppeana is a rare species of flowering plant in the family Euphorbiaceae 2 known by the common names Deppe s broomspurge and Oahu sandmat It is endemic to Oʻahu Hawaii where it is known from only one population 3 in moist shrublands on Nuʻuanu Pali 4 Like other native Hawaiian euphorbs it is called ʻakoko locally Euphorbia deppeana Conservation status Critically Endangered IUCN 3 1 1 Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Clade Rosids Order Malpighiales Family Euphorbiaceae Genus Euphorbia Species E deppeana Binomial name Euphorbia deppeanaBoiss Synonyms 2 Anisophyllum californicum Klotzsch amp Garcke Chamaesyce deppeana Boiss Millsp Chamaesyce festiva Sherff Croizat amp O Deg Euphorbia festiva Sherff Euphorbia pauciflora Nutt ex Seem This shrub is erect or sprawling in form The stems may exceed a meter in length and contain milky sap 4 The plant has never been abundant as long as the area has been surveyed for flora 3 It was not seen for many decades and by the 1980s it was feared extinct 3 The single known population was rediscovered in 1986 and it contained fewer than 100 plants 3 In 1994 it was added to the United States endangered species list 3 By 2007 the population was estimated to have exceeded 100 plants but they are hard to count because they grow on a sheer rock cliff in the middle of a tourist area 3 The species is still considered endangered because there is only a single population and it is threatened by a number of processes 3 Several invasive plant species have moved into the area and compete with the rare native for water light nutrients and physical space 3 The most important non native plants in the area include ironwood Casuarina equisetifolia Hilo grass Paspalum conjugatum Christmasberry Schinus terebinthifolius and the common guava Psidium guajava 1 3 Other threats to the species include fires and human interference with the plants 1 4 References edit a b c Sporck Koehler M 2018 Euphorbia deppeana IUCN Red List of Threatened Species 2018 e T44130A83799515 doi 10 2305 IUCN UK 2018 2 RLTS T44130A83799515 en Retrieved 19 November 2021 a b Euphorbia deppeana Boiss Plants of the World Online The Trustees of the Royal Botanic Gardens Kew n d Retrieved September 4 2020 a b c d e f g h i USFWS Chamaesyce deppeana Five Year Review August 2 2007 a b c Chamaesyce deppeana Archived 2002 11 21 at the Wayback Machine The Nature Conservancy External links editUSDA Plants Profile nbsp This Euphorbia related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Euphorbia deppeana amp oldid 1214395184, wikipedia, wiki, book, books, library,
