is a specific kind of: asterid dicot genus.

has as a member: Hymenoxys acaulis, stemless hymenoxys, Tetraneuris acaulis | alpine sunflower, Hymenoxys grandiflora, old man of the mountain, Tetraneuris grandiflora.

is a member of: aster family, Asteraceae, Compositae, family Asteraceae, family Compositae.