The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, all of which are endemic to the Hawaiian Islands. This is the largest plant radiation in the Hawaiian Islands, and indeed the largest on any island archipelago, with over 125 species. The six genera can be broadly separated based on growth habit: Clermontia are typically branched shrubs or small trees, up to 7 metres (23 ft) tall, with fleshy fruits; Cyanea and Delissea are typically unbranched or branching only at the base, with a cluster of relatively broad leaves at the apex and fleshy fruits; Lobelia and Trematolobelia have long thin leaves down a single, non-woody stem and capsular fruits with wind-dispersed seeds; and the peculiar Brighamia have a short, thick stem with a dense cluster of broad leaves, elongate white flowers, and capsular fruits.
Kokia cookei is a small, deciduous tree commonly known as the kokiʻo, Molokaʻi treecotton, Cooke's kokiʻo, or Molokaʻi kokiʻo.
Eugenia koolauensis, commonly known as Koʻolau eugenia or nioi, is a species of flowering plant in the myrtle family, Myrtaceae. It is endemic to Hawaii, where it could previously be found on the islands of Molokaʻi and Oʻahu; today populations only exist on the latter. This is a federally listed endangered species of the United States.
Melicope haupuensis is a species of tree in the family Rutaceae known by the common names Haupa Mountain melicope and Pacific pelea. It is endemic to the Hawaiian Islands, where it is known only from the island of Kauai. It is threatened by habitat loss. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Melicope mucronulata is a species of plant in the family Rutaceae. It is endemic to the Hawaiian Islands. It is threatened by habitat loss. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Melicope ovalis, the wild pelea or Hana melicope, is a species of tree in the family Rutaceae. It is endemic to Maui, of the Hawaiian Islands.
Melicope pallida, the pale melicope, is a species of tree in the family Rutaceae. It is endemic to the Hawaiian Islands. It is threatened by habitat loss. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Melicope paniculata, the Lihue melicope, is a rare species of tree in the family Rutaceae. It is endemic to the Hawaiian Islands. Like other Hawaiian Melicope, this species is known as alani.
Melicope puberula, the hairy melicope, is a species of plant in the family Rutaceae. It is endemic to the Hawaiian Islands. Like other Hawaiian Melicope, this species is known as alani. In 2010 it was added to the endangered species list of the United States.
Melicope quadrangularis, also called four angle melicope or four-angled pelea, is a species of plant in the family Rutaceae. It is endemic to the Hawaiian Islands, where it is known only from the island of Kauai. It is threatened by habitat loss.
Melicope saint-johnii, the St. John's pelea or St. John's melicope, is a species of tree in the family Rutaceae. It is endemic to the Hawaiian Islands, where it is present only on the island of Oahu. Like other Hawaiian Melicope, this species is known as alani. It is threatened by habitat loss. It is a federally listed 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.
Melicope adscendens is a rare species of flowering plant in the citrus family known by the common name auwahi melicope. It is endemic to Hawaii, where it is known only from the island of Maui. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Melicope degeneri is a rare species of flowering plant in the family Rutaceae known by the common names Kokee Stream melicope and Degener's pelea. 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 Hawaiian Melicope, this species is known as alani.
Melicope lydgatei is a rare species of flowering plant in the citrus family known by the common names Koolau Range melicope and Lydgate's pelea. It is endemic to Hawaii, where it is known only from the Koolau Range on the island of Oahu. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Melicope munroi is a rare species of flowering plant in the family Rutaceae known by the common names lanahale and Munro's pelea. It is endemic to Hawaii, where it is known only from the island of Lanai. It is a federally listed endangered species of the United States. Like other Hawaiian Melicope, this species is known as alani.
Myrsine linearifolia is a rare species of flowering plant in the primrose family known by the common name narrowleaf colicwood. It is endemic to Hawaii, where it is known only from the island of Kauai. There are 12 populations remaining, for a total of fewer than 200 plants. Like other Hawaiian Myrsine this plant is called kōlea. It is a federally listed threatened species of the United States.
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.
Silene alexandri is a rare species of flowering plant in the family Caryophyllaceae known by the common names Kamalo Gulch catchfly and Alexander's catchfly. It is endemic to Hawaii, where it is known only from the island of Molokai. It is threatened by the degradation of its habitat and it is a federally listed endangered species of the United States.
Silene lanceolata is a rare species of flowering plant in the family Caryophyllaceae known by the common names Kauai catchfly and lanceolate catchfly. It is endemic to Hawaii, where it is known only from Oahu, Molokai, and Hawaii, having been extirpated from Kauai and Lanai. It is threatened by the degradation of its habitat and it is a federally listed endangered species of the United States.
