Hybrid ash tree named ‘Northern Treasure’

Abstract

A new and distinct Fraxinus nigra Marsh.× Fraxinus mandshurica Rupr. hybrid ash cultivar is provided which exhibits a vigorous growth habit. An attractive upright tree form with an acute branching character is exhibited. Shiny yellow-green compound leaves are formed. The flowers are perfect, seed production is low, and no production of viable seeds has been observed to date. The tree hardiness is excellent. The new cultivar is particularly well suited for the lining of streets and boulevards.

We claim:  
     
       1. A new and distinct  Fraxinus nigra  Marsh.× Fraxinus mandshurica  Rupr. ash tree which exhibits the following combination of characteristics: 
       (a) a vigorous growth habit,  
       (b) an upright form with an acute branching character,  
       (c) shiny yellow-green pinnately compound leaves,  
       (d) forms perfect flowers,  
       (e) exhibits excellent hardiness, and  
       (f) is particularly well suited for the lining of roadways;  
       substantially as illustrated and described.