Lysimachia is a genus consisting of 193 accepted species of flowering plants traditionally classified in the family Primulaceae. Based on a molecular phylogenetic study it was transferred to the family Myrsinaceae, before this family was later merged into the Primulaceae.
The Alakaʻi Wilderness Preserve, popularly known as Alakaʻi Swamp, is a montane wet forest on the Hawaiian island of Kauaʻi. Although the preserve is home to alpine bogs, it is not a true swamp. It is located on a plateau near Mount Waiʻaleʻale, one of the wettest spots on Earth. Due to its unique combination of high elevation and climate, the Alakaʻi Swamp harbors a large number of endangered endemic species that are only found in this area and whose population has been dramatically declining over the last decades. It is designated as a IUCN protected area.
Metrosideros polymorpha, the ʻōhiʻa lehua, is a species of flowering evergreen tree in the myrtle family, Myrtaceae, that is endemic to the six largest islands of Hawaiʻi. It is a member of the diverse Metrosideros genus, which are widespread over the southwest Pacific. It is the state tree of Hawai‘i.
Hibiscadelphus woodii, or Wood's hau kuahiwi, is a species of flowering plant in the family Malvaceae endemic to Kauai, Hawaii.
Euphorbia eleanoriae is a rare species of flowering plant in the euphorb family known by the common name Nā Pali sandmat. It is endemic to Kauaʻi, Hawaii. Like other native Hawaiian euphorbs it is called ʻakoko locally. This plant was only discovered in 1992 and described to science in 1996 as Chamaesyce eleanoriae. At that time there were fewer than 500 plants known, all occurring in small populations scattered across the sheer cliffs along the Nā Pali Coast of Kauaʻi. By 2001 the total population had already dropped; only three populations were found, for a total of fewer than 50 plants. The plant was federally listed as an endangered species of the United States in 2010.
Euphorbia halemanui is a rare species of flowering plant in the euphorb family known by the common name Kauai sandmat. It is endemic to Kauaʻi, Hawaii, where there are no more than 400 plants remaining. There are four populations at last count. It is a federally listed endangered species.
Cyanea recta is a rare species of flowering plant in the bellflower family known by the common names upright cyanea and Kealia cyanea. It is endemic to Hawaii, where it is known only from the island of Kauai. It is a federally listed threatened species of the United States. Like other Cyanea it is known as haha in Hawaiian.
Cyanea remyi is a rare species of flowering plant in the bellflower family known by the common name Remy's cyanea. It is endemic to Hawaii, where it is known only from the island of Kauai. It is a federally listed endangered species of the United States. Like other Cyanea, it is known as haha in Hawaiian.
Dubautia imbricata is a rare species of flowering plant in the family Asteraceae known by the common names bog dubautia and imbricate dubautia. It is endemic to Hawaii where it is known only from the island of Kauai. There are four known occurrences. Like other Dubautia this plant is known as na`ena`e.
Dubautia kalalauensis is a rare species of flowering plant in the family Asteraceae. It is endemic to Hawaii where it is known only from the island of Kauai. There is only a single known population composed of 26 plants. It was federally listed as an endangered species of the United States in 2010. Like other Dubautia this plant is known as na`ena`e.
Geranium kauaiense is a rare species of geranium known by the common name Kauai geranium. It is endemic to Hawaii, where it is known only from the island of Kauai. It was federally listed as an endangered species in 2010. Like other Hawaiian geraniums, this plant is known as hinahina and nohoanu.
Labordia pumila, the Kauai labordia, is a rare species of flowering plant in the Loganiaceae family. It is endemic to Hawaii, where it is found only on Kauai. It is a federally listed endangered species of the United States. Like other Labordia species, this plant is known as Kamakahala.
Lysimachia filifolia is a rare species of flowering plant in the Primulaceae known by the common name Wailua River yellow loosestrife. It is endemic to Hawaii, where there are two populations on Oahu and one on Kauai. It is a federally listed endangered species of the United States.
Lysimachia iniki is a rare species of flowering plant in the family Primulaceae known by the common names Wailua River yellow loosestrife and Wailua River island-loosestrife. It is endemic to Hawaii, where there is only one known occurrence existing on the island of Kauai. The plant was federally listed as an endangered species of the United States in 2010.
Lysimachia lydgatei is a rare species of flowering plant in the family Primulaceae known by the common name Maui yellow loosestrife. It is endemic to Hawaii, where there are only four occurrences remaining on the island of Maui, the total number of plants under 300. It is federally listed as an endangered species of the United States.
Lysimachia maxima is a rare species of flowering plant in the family Primulaceae known by the common name Pelekunu Trail yellow loosestrife. It is endemic to Hawaii, where there are only two small populations remaining on the island of Molokai. It is federally listed as an endangered species of the United States.
Lysimachia pendens is a rare species of flowering plant in the family Primulaceae known by the common name broad-leaf yellow loosestrife. It is endemic to Hawaii, where there is a single occurrence known on the island of Kauai. It was federally listed as an endangered species of the United States in 2010.
Lysimachia scopulensis is a rare species of flowering plant in the family Primulaceae known by the common name shiny-leaf yellow loosestrife. It is endemic to Hawaii, where there are two small populations on the island of Kauai. It was federally listed as an endangered species of the United States in 2010.
Lysimachia venosa is a rare species of flowering plant in the family Primulaceae known by the common name veined yellow loosestrife. It is endemic to Hawaii, where it is known only from the island of Kauai. The plant was only collected twice, last in 1911, but in 1991, a branch was discovered that had broken off the steep cliffs above the headwaters of the Wailua River. The branch was from a plant of this species and may have fallen from the summit of Mount Waialeale. No more specimens have been found since and the plant may be extinct, but some experts believe it may still exist in unsurveyed parts of the habitat. It was federally listed as an endangered species of the United States in 2010.
Schiedea attenuata is a rare species of flowering plant in the family Caryophyllaceae known by the common name Kalalau schiedea. It is endemic to Hawaii, where it is known only from the Kalalau Valley on the island of Kauai. It is threatened by the degradation of its habitat. It was federally listed as an endangered species of the United States in 2010.
