Vascular – Exotic
Trees & Shrubs - Dicotyledons
A tree often found in wet areas adjacent to, or in forest remnants (Porteus 1993). A plant that grows on riverbanks, lakesides, drainage canals and wet places (Department of Conservation 1996). A plant that forms dense stands in rivers and drains (Department of Conservation 1996). A plant that invades communities dominated by native plant species e.g. willow in manuka at Whangamarino (West 1993).
Wetland plant indicator status rating
FACW: Facultative Wetland
Usually is a hydrophyte but occasionally found in uplands (non-wetlands).
Manaaki Whenua Online Interactive Key
A tree and shrub that is mostly deciduous (Department of Conservation 1996). Leaves are usually alternate, trunks sometimes lying down and rooting at the nodes (Department of Conservation 1996). The leaves are lanceolate or elliptic to oval and sometimes shallowly toothed (Department of Conservation 1996). A plant that produces catkins (Department of Conservation 1996).
There are many species in New Zealand but often only represented by a single clone (Department of Conservation 1996). Often the plant is lying down and rooting at the nodes, brittle and easily broken shoots grow extremely easily (ibid.).
Reason for introduction