There were 2 illustrations found for H. Mason
2 840367 Protea caespitosa AndrewsJ.P. Rourke, F. Anderson, Proteas S. Afr.: t. 42a (1980) [H. Mason]
2 840849 Protea tenax R. Br.J.P. Rourke, F. Anderson, Proteas S. Afr.: t. 57a (1980) [H. Mason]
2 840367 Protea caespitosa Andrews2 840849 Protea tenax R. Br.