Fraxinus anomala
Common name: 
Singleleaf Ash
Dwarf Ash
FRAKS-i-nus a-NOMa-la
Native to (or naturalized in) Oregon: 
  • Broadleaf deciduous shrub or small tree, may grow to 5-20 feet (1.5-6 m) tall; the tree form has a rounded crown and crooked trunk; bark is thin, and divided by shallow fissures into narrow, scaly ridges.   Leaves opposite, usually simple, but occasionally compound with 2-3 leaflets, 4-5 cm long and 3-4 cm wide (leaflets smaller), thin but leathery, upper surface green and smooth, lower surface paler.  Fruit (samara) 1.5-2.5 cm long and about 7 mm wide.
  • Sun
  • Hardy to USDA Zone 4    Native range extends from southeastern California west to Colorado and south into Texas and northern Mexico.
  • Discovered 1859 by Dr. John Newberry, surgeon-botanist, on one of the Pacific Railway Surveys.
  • anomala: an anomaly, other Fraxinus have compound leaves.
Click image to enlarge
  • plant habit, in habitat

    plant habit, in habitat

  • plant habit, in habitat

    plant habit, in habitat

  • leafy shoot

    leafy shoot

  • leaves


  • leaf


  • plant habit, flowering in habitat

    plant habit, flowering in habitat

  • flowering branches

    flowering branches

  • leaves and flower cluster

    leaves and flower cluster

  • trunk, bark

    trunk, bark

  • winter twig, buds

    winter twig, buds