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
The Word for World Is Forest dependence on their ecosystem through the use of forest related metaphors. Similarly, the Athshean word for "dream" is the same as the word for "root". Athsheans have learned to exert some conscious control over their dreams, and their actions are dictated by both their dream experiences and their conscious non-dreaming thoughts. Thus their dreaming makes them rooted, something which is demonstrated through their use of language. The Athshean word for "god" is the same as the word for "translator", representing this role that "gods have" in their society, which is to interpret and translate their dreams into actions. "The Word