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
Ficus septica by fig wasps from the genus "Ceratosolen". Usually members of the genus "Ficus" are pollinated by a single species of pollinating fig wasps specific to each fig species, but recent observations of "Ficus septica" have shown there to be three pollinating species in the South of Taiwan and two in The Philippines. The figs of "Ficus septica" have been reported to be eaten by 22 animal species and among them 14 are bats: Ficus septica Ficus septica (called Hauli tree in the Philippines, 棱果榕 in China and Taiwan) is a shrub or tree of the family Moraceae living at low