Are both Erigeron and Catalpa native to Asia?
Erigeron:  The genus has a cosmopolitan distribution in dry, mountainous areas and grassland, with the highest diversity in North America. Catalpa: Catalpa, commonly called catalpa or catawba, is a genus of flowering plants in the family Bignoniaceae, native to warm temperate and subtropical regions of North America, the Caribbean, and East Asia.
no