Cyperus eragrostis Pale Galingale

A native species in tropical America which has been in cultivation for at least 200 years and was first reported wild in Britain in Penarth, Glamorgan in 1876. It is a robust, perennial sedge with short rhizomes and compact inflorescensces made up of clusters of numerous, yellowish-green spikelets, each with one stamen and subtended by long, conspicuous leafy bracts. It grows in open areas liable to flooding and in wet areas at the edges of ponds or in ditches along roads. Populations can be quite large but they usually don't persist for many years.

Neophyte