Are both Eriostemon and Selaginella considered genus cliassifications?
Selaginella Selaginella is the sole genus of primitive vascular plants in the family Selaginellaceae, the spikemosses or lesser clubmosses.
Callistemon Callistemon is a genus of shrubs in the family Myrtaceae, first described as a genus in 1814. The entire genus is endemic to Australia but widely cultivated in many other regions and naturalised in scattered locations. Their status as a separate taxon is in doubt, some authorities accepting that the difference between callistemons and melaleucas is not sufficient for them to be grouped in a separate genus.