Large, strong shrub that grows to become a small tree with an obovoid to narrow fan-shaped crown. The branches hang gracefully, especially on older trees. The five to seven lobes of the palmatifid leaf conjoin at about a third to a quarter of the leaf base. The leaf margins are finely serrated. The leaf is a dark wine red, becoming somewhat redder as it grows. In autumn it turns deep red. Because ‘Atropurpureum’ has also been propagated by sowing in the past, there are currently several clones on the market that sometimes differ in detail. With inferior clones, the leaf turns purplish green in the summer. ‘Atropurpureum’ is one of the most widely used cultivars of Acer palmatum.