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.
Idiothamnus Idiothamnus is a genus of South American flowering plants in the sunflower family.