Source: Museum entry book 1855-61.: Petioles of the Piassaba palm showing the mode of growth of the beard, which is quite analagous to the matted sheath of the fronds of the common cocoa, the beard of the Patana etc. The Piassaba used for making ropes,et, c., is taken from young trees only, of from 3 to 5 feet high; for as the trunk grows higher, the beard of each frond grows gradually shorter, so as to be unserviceable for such purposes. I enclose the long beard taken from a tree 4 ft high and others from, a tree of 40 feet.Forests of the Rio Guiana and Rio Casiquiare.