The Coffee-tree is said to be a native of Abyssinia. Two species, the Arabian and the Liberian, are now cultivated throughout the tropics. The use of coffee was known in Arabia long before it was introduced to Europeans in the sixteenth century. The Dutch were the first to introduce the plant to Europe. The Arabian Coffee-tree is low-growing, and bears one crop annually; its leaves are elliptico-oblong, acuminate, generally from 3 to 6 inches long, and are thin and shiny. The white flowers appear in clusters, and are very fragrant. The berries are ovoid, fleshy, and bright red. In this berry are found the two seeds, which constitute the coffee of commerce. The Coffee-tree was introduced into Hawaii about 1823, by a Frenchman, who established a small plantation in Manoa Valley, Oahu. The tree is now well naturalized in the woods of Kona, Hawaii, and elsewhere in the Islands, and flourishes up to an elevation of from 1000 to 2000 feet. [Illustration: PLATE XXXI.--_Arabian Coffee._ One half natural size.] _G. P. W. Collection._ PLATE XXXII _Coffea liberica._ LIBERIAN COFFEE. This species is a tall grower, is highly ornamental in foliage, and is a rich bearer. Its leaves are from 6 to 12 inches long. The white flowers come in dense clusters, and are more robust and productive than are those of the Arabica. The berries are nearly spherical, and in color are a dull crimson. The pulp is large in proportion to the size of the seeds. Although this variety has not become popular in Hawaii, it is claimed that it will grow at a much lower elevation than will the Arabica, and the flavor is said to be very fine. [Illustration: PLATE XXXII.--_Liberian Coffee._ One half natural size.] _G. P. W. Collection._ PLATE XXXIII _Clausena Wampi._ WAMPI. This odorous tree is a native of China. It is a symmetrical evergreen with dense foliage. The light, mossy-green leaves are imparipinnate, the leaflets ovate-repand, and they are rough on the under surface. The flowers, which are borne in clusters, on the new wood, are small, yellow, and very fragrant. The fruit ripens from June until October; it is about the size of a gooseberry; the skin is yellowish-brown, shaded with green. The pulp is sub-acid with a balsamic fragrance. It contains one large seed about the size of a kernel of corn. There are two varieties, the sweet and the sour; both may be eaten raw, and are very highly prized by the Chinese. I know of but two trees of this kind in the Hawaiian Islands; they are of the sour variety, and are growing in private gardens in Honolulu. [Illustration: PLATE XXXIII.--_Wampi._ One half natural size.] _G. P. W. Collection._ PLATE XXXIV _Physalis peruviana._ CAPE GOOSEBERRY--"POHA."