Heteropogon contortus (Kumeria)
The species is known by many common names, including black speargrass, tanglehead, steekgras and pili. H. contortus is a valuable pasture species across much of its range however it has also been responsible for the elimination of the wool industry over much of Australia due to the seeds becoming embedded in the wool and skin of sheep and devaluing the wool and killing the animals. H. contortus seeds are also responsible for similar injuries in dogs with thick undercoats, or becoming embedded in the socks and skin of hikers.