Triodia scariosa

Jacobs (1992) included T. irritans R.Br. var. laxispicata N.T.Burb. within T. scariosa after finding the types of the two were identical, and recognised a new subspecies, Triodia scariosa subsp. bunicola S.W.L. Jacobs (later elevated to T. bunicola (S.W.L.Jacobs) Lazarides). The differences between Victorian plants previously referred to these entities (i.e. lemmas firmer, broader and minutely scabrous in T. irritans var. laxispicata and glumes and lemmas firmer and the florets more closely overlapping in T. bunicola) have been shown to be attributable to variation within T. scariosa (Hurry et al. 2012). Triodia irritans var. compacta N.T.Burb. has been demonstrated to be a distinct entity (raised to specific rank, T. compacta (N.T.Burb.) S.W.L.Jacobs) of restricted occurrence in South Australia. Reported occurrences of this species in Victoria have been based on misinterpretation of features.