下から見た楷の木の青葉です。楷の木は左右対称に葉がつくといった特徴があります。These are green leaves of Chinese Pistache looking from the below. Chinese Pistache trees have a characteristic which produce symmetric appearance of leaves.  The original name of Chinese Pistache is ‘Kai(楷)’.  This Chinese letter, ‘楷(Kai)’ means ‘complying with the standard’ or ‘keeping to the regulations’.