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The Amaryllis Family: Genus Rhodophiala

The genus Rhodophiala in the Amaryllis Family (Amaryllidaceae) is native to Chile and Argentina in South America. It belongs to the tribe Hippeastreae, and the Rhodophiala are related to Sprekelia, Zephyranthes, and Habranthus, all in the same tribe. They are herbaceous perennial bulbs. The flowers are borne in an umbel at the top of the peduncle or stalk.

Closely related are the rain lilies, Zephyranthes and Habranthus and the genus Cooperia, which is submerged into Zephyranthes by some taxonomists. These genera are currently being studied using DNA sequencing. Marked revisions of the assignments of some of the species in these genera can be expected. See: Amaryllid Phylogeny

Some species of Zephyranthes:

Other Sources of Information

Bulbs for Warm Climates, Thad M. Howard, University of Texas Press, Austin (2001).
Bulbs, Revised Edition, John E. Bryan, Timber Press, Portland (2002).
Bulbs of North America, Jane McGary, Editor, Timber Press and North American Rock Garden Society, Portland (2001).
RHS Manual of Bulbs, John Bryan and Mark Griffiths, Eds., Timber Press, Portland (1995).

For a list of species names, see the Missouri Botanic Garden's Tropicos On-Line Database at

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James E. Shields,
Last revised: 14 February 2013
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