Carex demissa Hornem.
European yellow sedge (Carex demissa) is a long-lived, perennial sedge that is native to Europe and eastern Canada. It was likely introduced to New Zealand as a contaminant of pasture seed and was first recorded in the wild (naturalised) in 1907. The plant forms dense tufts with narrow, grass-like leaves and flowering stems up to about 60 centimetres tall. It flowers from October to January, producing several short, yellow-green to brown flower spikes, which develop into small, dry fruits containing a single seed. It tolerates damp conditions, periodic flooding and a range of soil types. It reproduces by seed. Seeds are dispersed by water, animals and human activities.
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