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Acacia koa, commonly known as koa, [3] is a species of flowering tree in the family Fabaceae. It is endemic to the Hawaiian Islands , [ 2 ] where it is the second most common tree. [ 4 ] The highest populations are on Hawaiʻi , Maui and Oʻahu .
Koa wilt is caused by a forma specialis of the fungus Fusarium oxysporum, which is now abundant in Hawaiian soils and infects the native Acacia koa tree, a once-dominant species in the canopy of Hawaiian forests. Fusarium oxysporum f.sp. koae is believed to have been brought into Hawaii on an ornamental acacia plant. [1]
0.01% Nicotine was reported from leaves, but identity of the plant was not certain; [66] claims of DMT and NMT in the plant [67] require verification or a proper reference Acacia rigidula 0.025% alkaloids from leaves, including N-methyl-phenethylamine and N-methyl-tyramine (both tentatively identified). [ 14 ]
Acacia confusa is a perennial tree native to South-East Asia. Some common names for it are ayangile, small Philippine acacia, Formosa acacia (Taiwan acacia), Philippine Wattle, and Formosan koa. It grows to a height of 15 m. The tree has become very common in many tropical Pacific areas, including Hawaii, where the species is considered ...
Acacia koaia, known as koaiʻa or koaiʻe in Hawaiian, is a species of acacia that is endemic to Hawaii. It is closely related to koa ( Acacia koa ), and is sometimes considered to be the same species.
Acacia koa (koa) [10] An evergreen with highly valued wood: unusually colorful, with a curvy grain and good woodworking properties. The tree grows naturally only in Hawaii, where it is an important part of mountainous rainforests. Uses: timber; landscaping, sap resins, veneers. [11] —
SEM image of Acacia pollen (about 50 microns long). There are 1085 species of Acacia accepted by Plants of the World Online as at December 2024, with species native to Australia, New Guinea, Southeast Asia, Hawaii and the Mascarene Islands, and introduced to other countries.
Acacia is a common food source and host plant for butterflies of the genus Jalmenus. The imperial hairstreak, Jalmenus evagoras , feeds on at least 25 acacia species. [ 35 ] Many reptiles feed on the sap, such as the native house gecko in Australia. [ 36 ]