About Juncus edgariae L.A.S.Johnson & K.L.Wilson
Juncus edgariae is a rush species, commonly known as Edgar's rush or wīwī, that is endemic to New Zealand. This species was formally described in 2001 by botanists Lawrie Johnson and Karen Wilson. Before its formal description, it had often been confused with Juncus gregiflorus, a species now recognized as endemic to Australia. The specific epithet edgariae honors Elizabeth Edgar, a New Zealand botanist. Juncus edgariae is the most abundant rush species in New Zealand, and it is widespread across the country, including on the Kermadec and Chatham Islands. It is commonly found from coastal areas up to hill elevations, most often in open shrubland, seasonally wet locations, or along the edges of wetlands. This species has been introduced to Britain.