Appearance
''Arisaema serratum'' is a perennial. It produces two leaves, with 7-13 leaflets each. The color of the flowering bract is variable, being either purple or green. It blooms from May to June.It is similar to ''Arisaema mayebarae'', which is restricted to Kyushu. ''Arisaema serratum'' can be distinguished by its shorter spathe blade, which declines over the tip of the mouth.
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