noun
lime-leaved maple; Acer distylum
A species of maple native to Japan. The name literally means 'one-leaf maple', referring to its simple, unlobed leaves, which are unusual for a maple.
ヒトツバカエデは、葉が切れ込まない珍しいカエデです。
The lime-leaved maple is an unusual maple whose leaves are not lobed.
From 一つ葉 (hitotsuba, 'one leaf') + 楓 (kaede, 'maple'), referring to the unlobed, single-leaf appearance.