Source: Spruce, R. (1908) IN: Wallace, A. ed. Notes of a botanist on the Amazon & Andes, pg 52 : At Para I saw the mode of collecting the native white pitch (Breo branco), which is used there, and throughout the Amazon, for caulking seams. It is yieldedb, y various species of the genus Icica trees which closely resemble the sumach and chiefly by one with a tall, clean growing trunk which was in great request for masts. When the bark of an Icica is wounded, a white milk flows slowly out and coagulates just, below the wound, which does not heal up quickly as in most milky trees, but continues to distil for several months or even years. The Indians, therefore, when they come across these trees in the forest, gash them with their tercados, in order that, when, they revisit them some time afterwards, they may find a good lump of resin accumulated. Breo banco is brought to market, either in its crude form, packed in baskets lined with leaves, when it is called breo virgem, or in thick cylinders, having been run, into moulds of that shape.. It is whitish, friable and exhales a strong agreeable odour. When melted and spread out over a plank or seam, it dries rapidly, and unless a good quantity of grease has been mixed with it in the melting it breaks away; but if, that precaution has been taken it adheres very tenaciously, and keeps out the water much better than the black pitch or Oanani, which is obtained from a Clusiacceous tree. Icica is the native name for the pitch in general;and the white pitch is calledby, the Indians Icicaritari.