A revision of the genus Hyalosperma (Asteraceae : Inuleae : Gnaphaliinae)

Characters used in discriminating genera within the Gnaphaliinae are noted. The application of the name Helipterum is discussed. The recognition of Hyalosperma Steetz as an Australian endemic genus distinct from Helipterum is proposed. Nine species are recognised; eight new species combinations are made. Three species previously reduced to synonymy under Helipterum cotula (Benth.) DC. are reinstated.