It refers to the evergreen tree for what is referred to as 'Edamono' (an evergreen tree which brings out the beauty of flowers) in Kado flower arrangement such as Eurya japonica which is served at the time of memorial services (Buddhist services) and visits to graves in the Tango region, Kyoto and other regions.
京都丹後地方等で、法事や墓参の際、使用するヒサカキ等、華道で言うところの、いわゆる「枝もの」常緑樹を指す。