Question: Hawaiian tropical dry forests have a dominant tree species of which tree in the pea family?

full_context: Document 1: Hakea: Hakea (pincushion tree) is a genus of 149 species of shrubs and small trees in the Proteaceae, native to Australia. They are found throughout the country, with the highest species diversity being found in the south west of Western Australia.
Document 2: Acacia koa: Acacia koa is a species of flowering tree in the pea family, Fabaceae. It is endemic to the Hawaiian Islands, where it is the second most common tree. The highest populations are on Hawaiʻ i, Maui and Oʻ ahu. Its name in the Hawaiian language, koa, also means brave, bold, fearless, or warrior.
Document 3: Inocarpus fagifer: Inocarpus fagifer, commonly known as the Tahitian chestnut, Polynesian chestnut, aila or mape tree, is a species of flowering plant in the subfamily Faboideae of the legume family, Fabaceae. The tree has a wide range in the tropics of the south-west Pacific and south-east Asian regions, and a history of traditional use by the peoples of Polynesia and Melanesia. It is the only edible and culturally important member of the genus "Inocarpus".
Document 4: Plantago hawaiensis: Plantago hawaiensis is a rare species of flowering plant in the plantain family known by the common name Hawaiian plantain. It is endemic to Hawaii, where it is known only from the island of Hawaii. It grows on the slopes of Mauna Loa and Hualalai. Like other Hawaiian "Plantago", it is known as kuahiwi laukahi. It is a federally listed endangered species of the United States.
Document 5: Albizia saman: Albizia saman (sometimes treated under the obsolete name "Samanea saman") is a species of flowering tree in the pea family, Fabaceae, that is native to the Neotropics. Its range extends from Mexico south to Peru and Brazil, but it has been widely introduced to South and Southeast Asia, as well as the Pacific Islands, including Hawaii. Common names include saman, rain tree and monkeypod (see also below). It is often placed in the genus "Samanea", which by yet other authors is subsumed in "Albizia" entirely.
Document 6: U.S. Virgin Islands Dry Forest: A Dry Forest are defined as a community of trees of different species that coexist in the same environment. These trees can grow nearby forming a canopy above. Dry forests lack an abundance of moisture, yet, there is an adequate amount of moisture to sustain the growth of the forest. Although dry forest tends to grow at an intermediate height compared to moist forest. Dry forest receives 850-1100mm of precipitation per year. High quantities of sea salt from the ocean decreases the height of the trees. Dry forest also consisted of layers of canopies, specifically two canopy layers that commonly found at an elevation below 300 meters. There is limited dead dry wood for termites to consume, this correlates with low density of termites in dry forests. The characteristics and development of Virgin Islands Dry Forest are contributed by a unique wind pattern that is usually strong. Dry Forest usually thrive in environments that have plenty sunshine, steep slopes, on soil that are challenged by thin rocky layers that poorly absorbs water. Within the three islands in the United States Virgin Islands, St. John has maintained a higher percentage of dry forest cover competing with St. Thomas at 43.1%; St. Croix has limited dry forest cover (9.22%). St. John and St. Thomas topography has significant steep hills and slopes compared to St. Croix. St. John is the most protected of the three islands, and as such it has the largest extensive tropical dry forests in the U.S. Virgin Islands. The island contains 650 native plants, 5,000 or more terrestrial insects, over 180 species of birds, of which 90% are native, and six native mammal bat species. One of the most common trees in the “native dry forest garden” is the amarat. They are acacias, (casha bush) but do not have thorns likes most other varieties.
Document 7: Fabaceae: The Fabaceae or Papilionoideae, commonly known as the legume, pea, or bean family, is a large and economically important family of flowering plants. It includes trees, shrubs, and perennial or annual herbaceous plants, which are easily recognized by their fruit (legume) and their compound, stipulated leaves. Many legumes have characteristics of flowers and fruits. The family is widely distributed, and is the third-largest land plant family in terms of number of species, behind only the Orchidaceae and Asteraceae, with about 751 genera and some 19,000 known species. The five largest of the genera are "Astragalus" (over 3,000 species), "Acacia" (over 1000 species), "Indigofera" (around 700 species), "Crotalaria" (around 700 species) and "Mimosa" (around 500 species), which constitute about a quarter of all legume species. The ca. 19,000 known legume species amount to about 7% of flowering plant species. Fabaceae is the most common family found in tropical rainforests and in dry forests in the Americas and Africa.
Document 8: Colubrina oppositifolia: Colubrina oppositifolia, known as Kauila in Hawaiian, is a species of flowering tree in the buckthorn family, Rhamnaceae, that is endemic to Hawaii. It can be found in dry, coastal mesic, and mixed mesic forests at elevations of 240 - on the islands of Oʻ ahu (Waiʻ anae Range) and Hawaiʻ i (slopes of Kohala, Hualālai, and Mauna Loa). There is also one individual remaining on Maui. Associated plants include alaheʻ e ("Psydrax odorata") and ʻ ohe kukuluāeʻ o ("Reynoldsia sandwicensis").
Document 9: Metrosideros excelsa: Metrosideros excelsa, with common names pōhutukawa, New Zealand pohutukawa, New Zealand Christmas tree, New Zealand Christmas bush, and iron tree, is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of red (or occasionally orange, yellow or white) flowers made up of a mass of stamens. The pōhutukawa is one of twelve "Metrosideros" species endemic to New Zealand. Renowned for its vibrant colour and its ability to survive even perched on rocky, precarious cliffs, it has found an important place in New Zealand culture for its strength and beauty and is regarded as a chiefly tree ("rākau rangatira ") by Māori. The blossom of the tree is called "kahika ".
Document 10: Wiliwili: Wiliwili, with the scientific name Erythrina sandwicensis, is a species of flowering tree in the pea family, Fabaceae that is endemic to the Hawaiian Islands. It is the only species of "Erythrina" that naturally occurs there. It is typically found in Hawaiian tropical dry forests on leeward island slopes up to an elevation of 600 m .
Document 11: Metrosideros polymorpha: Metrosideros polymorpha, the ʻ ōhiʻ a lehua, is a species of flowering evergreen tree in the myrtle family, Myrtaceae, that is endemic to the six largest islands of Hawaiʻ i. It is a highly variable tree, being 20 - tall in favorable situations, and a much smaller prostrate shrub when growing in boggy soils or directly on basalt. It produces a brilliant display of flowers, made up of a mass of stamens, which can range from fiery red to yellow. Many native Hawaiian traditions refer to the tree and the forests it forms as sacred to Pele, the volcano goddess, and to Laka, the goddess of hula. ʻ Ōhiʻ a trees grow easily on lava, and are usually the very first plants to grow on new lava flows.
Document 12: Kōwhai: Kōwhai (] or ] ) are small woody legume trees within the genus "Sophora" that are native to New Zealand. There are eight species, with "Sophora microphylla" and "S. tetraptera" being the most recognised as large trees. Their natural habitat is beside streams and on the edges of forest, in lowland or mountain open areas. Kōwhai trees grow throughout the country and are a common feature in New Zealand gardens. Outside of New Zealand, kōwhai tend to be restricted to mild temperate maritime climates.
Document 13: Clermontia drepanomorpha: Clermontia drepanomorpha is a rare species of flowering plant in the bellflower family known by the common name Kohala Mountain clermontia. It is one of several Hawaiian lobelioids in genus "Clermontia" that are known as `oha wai. This plant is endemic to Kohala, a volcano at the northern end of the island of Hawaii. This is a federally listed endangered species of the United States.
Document 14: Hawaiian tropical dry forests: The Hawaiian tropical dry forests are a tropical dry broadleaf forest ecoregion in the Hawaiian Islands. They cover an area of 6600 km2 on the leeward side of the main islands and the summits of Niʻ ihau and Kahoʻ olawe. These forests are either seasonal or sclerophyllous. Annual rainfall is less than 127 cm and may be as low as 25 cm ; the rainy season lasts from November to March. Dominant tree species include koa ("Acacia koa"), koaiʻ a ("A. koaia"), ʻ akoko ("Euphorbia" spp.), ʻ ōhiʻ a lehua ("Metrosideros polymorpha"), lonomea ("Sapindus oahuensis"), māmane ("Sophora chrysophylla"), loulu ("Pritchardia" spp.), lama ("Diospyros sandwicensis"), olopua ("Nestegis sandwicensis"), wiliwili ("Erythrina sandwicensis"), and ʻ iliahi ("Santalum" spp.). Endemic plant species in the dry forests include hau heleʻ ula ("Kokia cookei"), uhiuhi ("Caesalpinia kavaiensis"), and "Gouania" spp. The palila ("Loxioides bailleui"), a Hawaiian honeycreeper, is restricted to this type of habitat.
Document 15: Acacia: Acacia, commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially it comprised a group of plant species native to Africa and Australia, with the first species "A. nilotica" described by Linnaeus. Controversy erupted in the early 2000s when it became evident that the genus as it stood was not monophyletic, and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia was not closely related to the mainly African lineage that contained "A. nilotica"—the first and type species. This meant that the Australian lineage (by far the most prolific in number of species) would need to be renamed. Botanist Les Pedley named this group Racosperma, which was inconsistently adopted. Australian botanists proposed that this would be more disruptive than setting a different type species ("A. penninervis") and allowing this large number of species to remain "Acacia", resulting in the two African lineages being renamed "Vachellia" and "Senegalia", and the two New World lineages renamed "Acaciella" and "Mariosousa". This was officially adopted, but many botanists from Africa and elsewhere disagreed that this was necessary.
ground_truth: Acacia koa