Acer morifolium, Koidzumi (1914) From seeds planted in spring 2018 - dates mentioned in the names of the photos :
PS : I came to doubt whether these were morifolium because on some (very reliable) sources, the photos show leaves with no lobes, like the pictures at https://www.arboretumwespelaar.be/E...lustrations/List_of_illustrated_taxa/#alfabet But the ones from the Esveld nursery website definitely match mine : Pictures and description of Acer morifolium - www.esveld.nl The first ones on this page are even more different : Yakushima-onaga-kaede Acer morifolium