At a causal glance, the Blood-red Melastoma leaf is less pilous than that of Common Melastoma. A senior colleague said mocking, "The one with pilous leaf is not Blood-red Melastoma. Blood-red Melastoma has glabrous leaf with a rough hand feel." A strange yet easy way to remember.
Blood-red Melastoma:尨毛野牡丹、Common Melastoma:野牡丹
緑の部分はありません。見えている緑の葉はほかの植物のです。