This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A small genus of North American Mallowworts, of which the best known are S. malvoeflora (Callirhoe spicata), 2 3 ft. high, with lobed leaves and erect spikes of lilac or pale-rose flowers 2 in. across. The variety Listeri, with fringed pink flowers, is a better plant. 8. Candida, 2-3 ft. high, has white flowers. Both species are perennial, but may be raised from seeds, and treated as hardy or half-hardy annuals.