Lily of the valley (Convallaria majalis ), sometimes written lily-of-the-valley, is a sweetly scented, highly poisonous woodland flowering plant that is native throughout the cool temperate Northern Hemisphere in Asia and Europe. Other names include May bells, Our Lady's tears, and Mary's tears. Its French name, muguet, sometimes appears in the names of perfumes imitating the flower's scent. It is possibly the only species in the genus Convallaria (depending on whether C. keiskei and C. transcaucasica are recognised as separate species). In the APG III system, the genus is placed in the family Asparagaceae, subfamily Nolinoideae (formerly the family Ruscaceae). It was formerly placed in its own family Convallariaceae, and, like many lilioid monocots, before that in the lily family Liliaceae.