This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(after Joseph Cooper, English gardener). Amaryllidaceae. Tender bulbous plants with the habit of Zephyranthes but night-blooming.
Flowers fragrant, solitary, 2 in. or more across, waxy-white, tinged red outside, and more or less green within; the perianth subtended by a bract-like spathe, somewhat as in Iris; anthers erect in distinction to versatile in Zephyranthes: leaves appearing with the flowers in summer, long, narrow, flat and twisted. - Only 2 or 3 species from Texas to New Mex. and Mex., usually growing in dry places. The bulbs should be taken up in autumn and stored during the winter in dry soil. Cult, easy and like zephyranthes.
A. Neck of bulb short: perianth-tube 3 1/2 in. long or more. Drummondii, Herb. Evening Star. Bulb roundish, 1 in. thick, with a short neck: leaves narrowly linear, erect, 1 ft. long: peduncle slender, fragile, hollow, 1/2-1 ft. long; spathe 1 1/2-2 in. long, 2-valved at the tip; perianth tube 3-5 in. long; limb 3/4-1 in. long, white, tinged with red outside; segments oblong, cuspidate. Prairies, of wide range. variety chlorosfilen, Baker, has a perianth-tube stouter and tinged with green: limb longer and less wheel-shaped: leaves a little broader. B.M. 3482.
aa. Neck of bulb long: perianth-tube less than 2 1/2 in. long.
Herb. Giant Prairie Lily. More robust than C. Drummondii: bulb with a longer neck, 2-3 in. long: leaves about 6, 1 ft. long, 1/4in. broad: peduncle about 1 ft. long; spathe 1-2-valved at the tip; perianth-tube shorter, 1 1/2 in. long; limb nearly as long as the tube, tinged red outside. B.M. 3727. R.H. 1853:401-The best species. Flowers larger, of purer color, and remaining open a day or two longer.