Australian Plant Name Index (APNI)
The Australian Plant Name Index (APNI) is a tool for the botanical community that deals with plant names and their usage in the scientific literature, whether as a current name or synonym. APNI does not recommend any particular taxonomy or nomenclature. For a listing of currently accepted scientific names for the Australian vascular flora, please use the Australian Plant Census (APC) link above.
Text:"I prefer to regard it as an independent species, and have accordingly proposed the specific name 'rigens' as Bentham 's varietal name robusta is inappropriate and somewhat misleading, as the plant is rather stunted in habit, and rarely ever exceeds 1 foot in height."