Habranthus tubispathus (Rio Grande copperlily) is a species of flowering plant in the family Amaryllidaceae. It is a perennial bulb native to southern South America (Brazil, Argentina, Paraguay and Uruguay). It is widely cultivated as an ornamental and reportedly naturalized in the southeastern United States (Texas, Louisiana, Alabama, Georgia, Florida), much of the West Indies as well as Bermuda, eastern Mexico, India, Easter Island, and central Chile.
Flowers are produced sporadically during late summer and autumn, singly on stems 10 to 20 centimetres (4 to 8 in) tall. Flowers are usually yellow with copper tones on the outside, with tepals about 3 centimetres (1.2 in) long, fused for a short distance at the base to form a tube. As with all Habranthus species, the flowers are not upright on the stem but held at a slight angle. The leaves are not normally present at flowering time, appearing later; they are narrowly linear.
Habranthus tubispathus tolerates some frost if planted in sheltered sunny position. It seeds freely. A form with pinkish flowers is grown as H. tubispathus var. roseus, but may be a hybrid.
- World Checklist of Selected Plant Families, The Board of Trustees of the Royal Botanic Gardens, Kew, retrieved 2011-09-23, search for "Habranthus tubispathus"
- Mathew, Brian (1987), The Smaller Bulbs, London: B.T. Batsford, ISBN 978-0-7134-4922-8, p. 101
- "RHS Plant Selector - Habranthus tubispathus ". Retrieved 14 July 2013.