Acacia saligna?

Plant in the greenhouse of the Botanical Garden, Bochum, Germany, 14.5.09

Height: 4m; Some pendulous twigs; Leaves 9cm length and 2 cm width, resp. 15 cm length and 1,5 cm width.; Acute but not pungent. One middle nerve;
Flowers solitary from nodes, orange colored balls. Reddish fissured bark.