Luzula (Wood-rush)'s a genus of about 80 species of flowering plants the family Juncaceae, with a cosmopolitan distribution, the highest species diversity being in temperate Asia and Europe. The species are perennial (rarely annual) plants growing 20-80 cm tall, with linear grass-like leaves. Luzula species are used as food plants by the larvae of some Lepidoptera species including Smoky Wainscot and case-bearers of the genus Coleophora including C. antennariella (feeds exclusively on L. pilosa… (More on Luzula)