Spathodea is a genus in the plant family Bignoniaceae. The single species it contains, Spathodea campanulata, is commonly known as the African tulip tree. The tree grows between 7–25 m (23–82 ft) tall and is native to tropical dry forests of Africa. It has been nominated as among 100 of the "World's Worst" invaders.
The Kalalau Valley is located on the northwest side of the island of Kauaʻi in the state of Hawaiʻi. The valley is located in the Nā Pali Coast State Park and houses the Kalalau Beach. The Nā Pali Coast is rugged and is inaccessible to automobiles. The only legal ways to access the valley are by kayak or by hiking the Kalalau Trail.
Nepenthes campanulata, the bell-shaped pitcher-plant, is a tropical pitcher plant native to Borneo. It has also been reported from Palawan, the Philippines, though further field work is needed to confirm this identification.
Hibiscadelphus woodii, or Wood's hau kuahiwi, is a species of flowering plant in the family Malvaceae endemic to Kauai, Hawaii.
Kokia lanceolata, the Wailupe Valley treecotton, was a species of flowering plant in the family Malvaceae. It was the only species of Kokia to occur on the island of Oahu and originally known from the hills of Makapu'u, Koko Head and Wailupe Valley. It became extinct not long after its discovery in the 1880s, most likely due to grazing pressure from cattle and goat ranching.
Melicope knudsenii, commonly known as Olokele Valley melicope or Knudsen's melicope, is a species of flowering plant in the family Rutaceae, that is endemic to Hawaii. It inhabits montane mesic forests dominated by Acacia koa, Metrosideros polymorpha, and Dicranopteris linearis on Kauaʻi and East Maui (Auwahi). Associated plants include Syzygium sandwicensis, Cheirodendron trigynum, Myrsine lessertiana, Ilex anomala, Alphitonia ponderosa, Zanthoxylum dipetalum, Kadua terminalis, Pleomele aurea, Bobea spp., Tetraplasandra waimeae, Xylosma hawaiensis, Eurya sandwicensis, Psychotria mariniana, Melicope anisata, Melicope barbigera, Planchonella sandwicensis, Dodonaea viscosa, and Dianella sandwicensis. It is threatened by habitat loss. Like other Hawaiian Melicope, this species is known as alani. This is a federally listed endangered species of the United States.
Wikstroemia villosa, the hairy wikstroemia or hairy false ohelo, is a tropical species of plant in the Thymelaeaceae family.
Prunus eremophila, also known by its common name Mojave Desert plum, is a rare species of plum native to California.
Dubautia kenwoodii, the Kalalau rim dubautia, is an "extremely rare" species of flowering plant in the family Asteraceae. It is endemic to Hawaii where it is known only from the island of Kauai. Only one plant has ever been seen: the type specimen. A part of this plant was collected in 1991 and the individual was described as a new species in 1998. 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.
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.
Phyllostegia waimeae is a rare species of flowering plant in the mint family known by the common name Kauai phyllostegia. It is endemic to Hawaii, where it is limited to the island of Kauai. It is a federally listed endangered species of the United States.
Remya montgomeryi is a rare species of flowering plant in the family Asteraceae known by the common name Kalalau Valley remya. It is endemic to Hawaii, where it is known only from the island of Kauai. It is threatened by the degradation of its habitat. It is a federally listed endangered 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.
Stenogyne is a genus of flowering plants in the mint family first described in 1830. The entire genus is endemic to Hawaii.
- Stenogyne strangulationA.Gray - narrow leaf stenography
- Stenogyne bifidaHillebr. - two cleft stenography - Molokai
- Stenogyne methodicalnessA.Gray - bog stenography - Big Island
- Stenogyne cosmicallySherff - Maui
- Stenogyne campanulataWeller & Sakai - Kala Valley stenography - Kauai
- †Stenogyne incinerateHillebr - Maui but extinct
- Stenogyne cranwelliaeSherff - Big Island
- †Stenogyne haliakalaeWawra - Maui but extinct
- Stenogyne kaalaeWawra - Oahu
- Stenogyne kamehamehaeWawra - Molokai, Maui
- Stenogyne kanehoanaO.Deg. & Sherff - Oahu stenography - Oahu
- Stenogyne kauaulaensisK.R.Wood & H.Oppenh. - Maui
- Stenogyne kealiaeWawra - Kauai
- Stenogyne macranthaBenth. - Big Island
- Stenogyne microphyllaBenth. - Maui, Big Island
- †Stenogyne oxygonaO.Deg. & Sherff - Big Island but extinct
- Stenogyne purpureaH.Mann - Kauai
- Stenogyne rotundifoliaA.Gray - pua'ainaka - Maui
- Stenogyne rugosaBenth. - ma'ohi'ohi - Maui, Big Island
- Stenogyne scrophularioidesBenth. - mohihi - Big Island
- Stenogyne sessilisBenth. - Lanai, Maui, Big Island
- †Stenogyne viridisHillebr. - Maui but extinct
Stenogyne bifida is a rare species of flowering plant in the mint family known by the common name twocleft stenogyne. It is endemic to Hawaii, where it is known only from the island of Molokai. In 2010, there was only a single individual remaining in the wild; this is a seedling. It is a federally listed endangered species of the United States.
Stenogyne kanehoana is a rare species of flowering plant in the mint family known by the common name Oahu stenogyne. It is endemic to Hawaii, where it is known only from the Waianae Range on the island of Oahu. It is a federally listed endangered species of the United States.
Stenogyne kealiae is a rare species of flowering plant in the mint family known by the common name Keal's stenogyne. It is endemic to Hawaii, where it is known only from the island of Kauai. It was federally listed as an endangered species of the United States in 2010.
Polyscias flynnii is a plant species endemic to the island of Kauai in Hawaii. It is rare, found only in one population covering about 1 km2 in the Kalalau Valley. It is regarded as threatened. It is threatened by feral goats and non-native plant species in its habitat. It was federally listed as an endangered species of the United States in 2010.
