Palm trees of the Amazon and their uses

by Alfred Russel Wallace

One of the most recent introductions into our own domestic economy is the fibre of a palm, the Piassaba, which is now generally used for coarse brooms and brushes; and in the valley of the Amazon, of which it is a native, the same material is manufactured into cables, which are cheap and very durable in the water.

We have now glanced at a few of the most important uses to which Palms are applied, but in order to be able to appreciate how much the native tribes of the countries where they most abound are dependent on this noble family of plants, and how they take part in some form or other in almost every action of the Indian’s life, we must enter into his hut and inquire into the origin and structure of the various articles we shall see around us.

Suppose then we visit an Indian cottage on the banks of the Rio Negro, a great tributary of the river Amazon in South America. The main supports of the building are trunks of some forest tree of heavy and durable wood, but the light rafters overhead are formed by the straight cylindrical and uniform stems of the Jará palm. The roof is thatched with large triangular leaves, neatly arranged in regular alternate rows, and bound to the rafters with sipós or forest creepers; the leaves are those of the Caraná palm. The door of the house is a framework of thin hard strips of wood neatly thatched over; it is made of the split stems of the Pashiúba palm. In one corner stands a heavy harpoon for catching the cow-fish; it is formed of the black wood of the Pashiúba barriguda. By its side is a blowpipe ten or twelve feet long, and a little quiver full of small poisoned arrows hangs up near it; with these the Indian procures birds for food, or for their gay feathers, or even brings down the wild hog or the tapir, and it is from the stem and spines of two species of Palms that they are made. His great bassoon-like musical instruments are made of palm stems; the cloth in which he wraps his most valued feather ornaments is a fibrous palm spathe, and the rude chest in which he keeps his treasures is woven from palm leaves. His hammock, his bow-string and his fishing-line are from the fibres of leaves which he obtains from different palm trees, according to the qualities he requires in them,—the hammock from the Mirití, and the bow-string and fishing-line from the Tucúm. The comb which he wears on his head is ingeniously constructed of the hard bark of a palm, and he makes fish hooks of the spines, or uses them to puncture on his skin the peculiar markings of his tribe. His children are eating the agreeable red and yellow fruit of the Pupunha or peach palm, and from that of the Assaí he has prepared a favourite drink, which he offers you to taste. That carefully suspended gourd contains oil, which he has extracted from the fruit of another species; and that long elastic plaited cylinder used for squeezing dry the mandiocca pulp to make his bread, is made of the bark of one of the singular climbing palms, which alone can resist for a considerable time the action of the poisonous juice. In each of these cases a species is selected better adapted than the rest for the peculiar purpose to which it is applied, and often having several different uses which no other plant can serve as well, so that some little idea may be formed of how important to the South American Indian must be these noble trees, which supply so many daily wants, giving him his house, his food, and his weapons.

To the lover of nature Palms offer a constant source of interest, reminding him that he is amidst the luxuriant vegetation of the tropics, and offering to him the realization of whatever wild and beautiful ideas he has from childhood associated with their name.

In the equatorial regions of South America they are seldom absent. Either delicate species flourishing in the dense shade of the virgin forest; or lofty and massive, standing erect on the river’s banks; or on the hill side raising their leafy crowns on airy stems above the surrounding trees, creating, as Humboldt styles it, “a forest above a forest;” in every situation some are to be met with as representatives of the magnificent and regal family to which they belong.

In the following pages the genera and species are arranged in the order adopted by Dr. Martius in his elaborate work already alluded to.

Natural Order PALMACEÆ.
Genus Leopoldinia, Martius.

This genus is characterized by having flowers containing stamens or pistils only, intermingled on the same spadix, and by not having a spathe. The male flowers have six stamens and no rudiments of a stigma. The female flowers have three sessile stigmas and rudimentary stamens. The spadix is much branched and decomposed.

The species are trees of a moderate size without any spines or tubercles, but remarkable for the netted fibres which spring from the margins of the sheathing petioles, and cover the stem half way down or sometimes even to its base. The leaves are terminal and pinnate, the leaflets spreading out regularly in one plane. There are often three or four spadices on a tree, bearing abundance of small flowers, and ovate compressed fruit, the outer covering of which is fleshy.

Four species are known, and they are all found in the same limited district near the Rio Negro, some extending to the tributaries of the Orinoco near its source, and one being found south of the Amazon nearly opposite the mouth of the Rio Negro. All however grow on the banks or in the immediate vicinity of black-ater streams, which occur more extensively in South America than in any other part of the globe. Two species are described by Martius, one of which is here figured with two others, which are believed to be new. They are not found more than 1000 feet above the level of the sea.