A tree that grows wild along the seashore is given the name of Kamani by the Hawaiians. It has large, thick, leathery leaves, very smooth and shining, and clusters of waxy, white flowers. These flowers have four white petals and in the center is a mass of golden stamens surrounding a red pistil. They are fragrant.
The flowers are followed by round, reddish fruits which contain an oily nut. In other parts of the tropics, especially Fiji and India, this oil has important uses, but it is not extracted in Hawaii. The tree belongs to the Mangosteen family and is found widely through the tropics. The nut may have floated to the shores of Hawaii or possibly some early Polynesian voyager brought it in his double canoe.
True Kamani trees grow on the campus of the University of Hawaii. They may also be seen on a ride around the island, growing near the beach. ([Plate V])
A tree called locally False Kamani, is the Terminalia catappa. Its large leaves and the fact that it, too, grows near the sea probably caused it to be given this name. The special characteristic of this tree is the way its large leaves turn red before they fall in winter. A scattering of these big red leaves on the tree is very noticeable, and when the whole tree finally turns red it becomes a conspicuous object. New, shining green leaves shortly follow the old. A fine example of this tree grows in the grounds of Iolani Palace.
KOA
Acacia koa Gray
Like the Ohia, the Koa tree does not grow well at lower altitudes, but at proper elevations, such as near the volcano, on the Island of Hawaii, it becomes Hawaii’s largest and finest tree. It is, perhaps best known to town dwellers by its wood, known as Hawaiian mahogany, which has been extensively used in furniture. In cooler sections of Honolulu, such as Tantalus, and upper Nuuanu, Koa trees may be found growing. They seldom attain much size, but are often of very picturesque form.
The most characteristic thing about the Koa is its sickle-shaped leaf, like those found on many other members of the Acacia group. It is not a true leaf, however, but the flattened, grayish-green petiole, or leaf stem, modified to serve as a leaf. Such a modification is called a phyllode. The true leaves grow on young trees and sometimes appear on new growth. They are bipinnate, or fernlike, with many small leaflets. Both true and modified leaves are shown in [Plate V], but no flowers. Koa flowers are very inconspicuous, being small, creamy balls of stamens and pistils, like so many of the other Acacia flowers. They are followed by numerous small, brown pods.
The tall straight trunk of the Koa tree was used by the early Hawaiians to make canoes. A fine tree growing in the mountain was selected by the kahuna, or wise man of the village, and laboriously cut down with stone adzes. Then the whole village turned out to help drag it to the water’s edge. Here it was hollowed and shaped with stone implements. Finally, it was colored and the out-rigger attached, the entire process taking months, perhaps years.
MILO
Thespesia populnea (L.) Correa
A tree which has heart-shaped leaves, like those of the Hau, and Hibiscus-shaped flowers, but is of upright, normal form, is the Milo. The flower is a paler yellow than the Hau blossom, and has a red spot at the base of the petals. As it fades, it turns from yellow to a purplish pink. It is followed by a five-parted green capsule, which turns dark brown and hangs on the tree a long time.