Viola diffusa subsp. apoensis Viola diffusa subsp. apoensis (ELM.) D.M. MOORE, comb. nov.≡Viola apoense ELM. in Leafl. Philip. Bot. 8: 2878. 1915≡Viola diffusa subsp. tenuis (Benth.) BECKER in Philip. J. Sc. 19: pro parte. 1921