Are Billardiera and Calothamnus both types of genuses?
Billardiera Billardiera is a genus of small vines and shrubs which is endemic to Australia. The genus was first formally described in 1793 by botanist James Edward Smith who named it in honour of Jacques Labillardière, a French botanist.
Billbergia bradeana Billbergia bradeana is a species in the genus "Billbergia". This species is endemic to Brazil.