Prevalent along the lower reaches of the Waimakariri River past the gorge, some upper parts of the Rakaia River, and lower reaches of the Rangitata River mostly downstream from SH1. See the distribution map (when page opens, just click on the green ‘search’ button without changing any of the settings)
False tamarisk (Myricaria germanica) was accidentally introduced into New Zealand late last century. It is a deciduous shrub growing up to 1.5m that like stony or muddy ground within braided river beds. It has upright branches and small, narrowly triangular leaves (up to 5.5mm x 1.6mm) held close to its branches that appear bluish-green due to salt secretions on the underside. Small, red to pink, 5-petalled (3.2mm) flowers hang in clusters from January, and are followed in February and March by small grey capsules containing seeds (0.7-0.9mm).