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A hybrid of uncertain origin, although cultivated in Europe for more than half a century. It is probably a cross between A. monspessulanum and A. opalus var. obtusatum, being intermediate in its various characters between those two maples. Leaves three-lobed, sometimes with two additional, indistinct lobes at the base; 21⁄2 to 4 in. long and broad, reddish when young, smooth except for a little down at the base beneath; pale beneath, dark green above; lobes shallow, rounded; leaf-stalk not milky.