Century Plant in Staghorn Sumac

According to my parents, this is a century plant (Agave americana) amongst a ground cover of staghorn sumac (Rhus typhina).  The staghorn is so-named because to depict it is to lock horns with it, whilst the century plant's appellation refers to the fact it's 100 times harder to paint than one would imagine.

Oil on canvas board, 8" x 10"