Acer rufinerve
Common name: 
Redvein Maple
Honshu Maple
A-ser ru-fi-NER-ve
Sapindaceae, Aceraceae
Native to (or naturalized in) Oregon: 
  • Deciduous tree, to 30-35 ft (7-11 m) high, upright habit, often multi-stemmed.  Bark green (sometimes red?), striped white when young, becoming grayer as it matures.  Leaves opposite, simple, to 6-12 cm long, 3-lobed (occasionally 5), side lobes pointing outward, rounded at base, margin irregularly double serrated, dark green above, lighter green below with brown or reddish pubescence on veins, petiole stiff, to 6 cm; fall color yellow to scarlet.  Flowers greenish yellow, in 8 cm erect clusters (racemes), appear after the leaves.  Fruit wings, each 2 cm, spread at 90° to 120° angle.
  • Partial shade to full sun
  • Hardy to USDA Zone 5   Native to Japan, stands found in drier locations from the middle to upper forest slopes (Vertrees, 1987).
  • rufinerve: red- veined or -nerved, a reference to the veins on the underside of young leaves that are covered with rusty-red hairs.  By the end of summer this is reduced to tufts in the vein-axils. 
  • Silverton, Oregon: The Oregon Garden
  • Portland, Oregon: Hoyt Arboretum
Click image to enlarge
  • leaves


  • buds, late summer

    buds, late summer

  • leaf and fruit cluster

    leaf and fruit cluster

  • trunk, bark

    trunk, bark

  • bark, trunk and branches

    bark, trunk and branches

  • fruit, winter

    fruit, winter

  • winter branch and twig, buds

    winter branch and twig, buds