sentence: Some species are used for building shelters.
sentences_before: The leaf tips can break off in people's skin, causing infections. Spinifex has been used by Australian Aborigines in many things. The seeds are collected for food. Spinifex resin is used as a glue in spear-making. The grasses were also burned to make smoke signals, to communicate with groups a long way away.
sentences_after: Others are used to make traps for catching fish.
concept_name: specie
headings: Triodia
categories: Indigenous peoples of Australia Poaceae