Which plant grows in a specific region, Dendromecon or Aulax? 
Dendromecon: Dendromecon, the tree poppy, is a genus of one or two species of shrubs to small trees, native to California and northern Baja California. Aulax:  Like virtually all Proteaceae plants, they grow best on a light gritty soil with good drainage. Aulax:  They propagate from seed or half-hardened late summer-autumn cuttings.
Dendromecon