Ipheion uniflorum is a species of flowering plant, related to the onions, placed in the allium subfamily (Allioideae) of the Amaryllidaceae.

[4] It is native to Argentina and Uruguay, but is widely cultivated as an ornamental and reportedly naturalized in Great Britain, France, Australia, New Zealand [5] and the United States.

[6] This is a small herbaceous perennial growing from a bulb and producing flat, shiny, green, hairless, grasslike leaves up to 30 cm (12 in) long.

Each honey-scented, star-shaped flower has six pointed lobes up to 3 centimeters long in shades of very pale to deep purple-blue.

Ipheion uniflorum has been grown in the UK since 1820, when bulbs collected from near Buenos Aires arrived in the country.