Natural rubber at least showed promise as rubber sources, include the rubber fig ("Ficus elastica"), Panama rubber tree ("Castilla elastica"), various spurges ("Euphorbia" spp.), lettuce ("Lactuca" species), the related "Scorzonera tau-saghyz", various "Taraxacum" species, including common dandelion ("Taraxacum officinale") and Russian dandelion ("Taraxacum kok-saghyz"), and perhaps most importantly for its hypoallergenic properties, guayule ("Parthenium argentatum"). The term gum rubber is sometimes applied to the tree-obtained version of natural rubber in order to distinguish it from the synthetic version. The first use of rubber was by the indigenous cultures of Mesoamerica. The earliest archeological evidence of the use of natural latex from the
Site of Ficus superba var. henneana tree Site of Ficus superba var. henneana tree Site of "Ficus superba var. henneana" tree is a heritage-listed individual tree at 3-4 Fernleigh Gardens, Rose Bay in the Municipality of Woollahra local government area of New South Wales, Australia. It was planted during 1827. It is also known as Cedar fig, superb fig and Port Hacking fig; formerly part of Fernleigh Castle; The Ferns grounds. It was added to the New South Wales State Heritage Register on 2 April 1999. The fig tree is dated to and is probably a remnant of pre-European settlement Eastern Suburbs vegetation. In 1831 Samuel Breakwell