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Marcus, Joseph A.
Cooperia drummondii Herbert
Evening rain lily, Evening star rain lily
Synonyms: Zephyranthes brazosensis
USDA Symbol: codr2
USDA Native Status: Native to U.S.
The fragrant, solitary, white flower of this showy, bulbous perennial, is six-petaled and terminal on a leafless, 12 in. stem. Opening in the evening, it lasts 2-4 days before turning pink and withering. Smooth, gray-green, grass-like leaves elongate after the flower has faded. Cooperia drummondii is quite similar to C. pedunculata, but slightly smaller in every respect.
The species name of this plant is named for Thomas Drummond, (ca. 1790-1835), naturalist, born in Scotland, around 1790. In 1830 he made a trip to America to collect specimens from the western and southern United States. In March, 1833, he arrived at Velasco, Texas to begin his collecting work in that area. He spent twenty-one months working the area between Galveston Island and the Edwards Plateau, especially along the Brazos, Colorado, and Guadalupe rivers. His collections were the first made in Texas that were extensively distributed among the museums and scientific institutions of the world. He collected 750 species of plants and 150 specimens of birds. Drummond had hoped to make a complete botanical survey of Texas, but he died in Havana, Cuba, in 1835, while making a collecting tour of that island.
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf Retention: Deciduous Leaf Complexity: Simple Size Notes:
10-12 Fruit: Size Class:
Bloom InformationBloom Color: White
Bloom Time: May , Jun , Jul , Aug , Sep
AR , KS , LA , MS , NM , OK , TX Native Distribution:
From n. Mex. to NM, s.e. KS & LA Native Habitat:
Prairie, Plains, Meadows, Pastures, Savannahs, Woodlands edge, Opening USDA Native Status: L48(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Soil Description: Clay, Clay Loam, Medium Loam, Sandy Loam, Sandy, Limestone-based, Caliche type.
Conditions Comments: The beautiful white ephemeral flowers appear after rains and are a good addition to a short-grass meadow. The bulbs also naturalize well in a lawn or among low groundcover plants and can be used in a flower bed. Blooms best in full sun. While it may flower in spring, the most frequent flowering is in late summer and fall. The plant almost always appears a day or so after rain.
Shortgrass meadow, Can be mowed, Perennial
garden, Showy Conspicuous Flowers:
PropagationPropagation Material: Seeds
Description: Seed in fall. Transplant divisions almost anytime.
Seed Collection: Collect seed several weeks after strong rains.
Herbarium Specimen(s)NPSOT 0545
Collected Sep 6, 1987 in Bexar County by Harry CliffeNPSOT 0625
Collected Nov 5, 1993 in Bexar County by Mike FoxNPSOT 0022
Collected July 19, 1990 in Bexar County by Judith C. BerryNPSOT 0420
Collected Jun 4, 1987 in Bexar County by Harry CliffeNPSOT 0266
Collected Aug. 29, 1992 in Comal County by Mary Beth White
Wildflower Center Seed BankLBJWC-159
Collected 2007-09-29 in Travis County by Lady Bird Johnson Wildflower Center
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Record Modified: 2010-04-25
Research By: BJG, GDB