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 with originally of land, later subdivided to in the 1950s, and one acre lots in the 1960s. The castle with its substantial landscaped grounds was built by newspaper propietor Frank Bennett, and had been host to a number of notable guests and visitors in his ownership, tenanted later by Dame Nellie Melba, and other notable guests in later periods when used as a private hotel and banking executive training school. Site of "Ficus superba var. henneana" tree was listed on the New South Wales State Heritage Register on 2 April 1999. Site of Ficus superba var. henneana tree Site of