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Waitt, Damon E.
Ruellia drummondiana (Nees) A. Gray
Drummond's ruellia, Drummond's wild petunia
Synonym(s): Dipteracanthus drummondianus
USDA Symbol: rudr
USDA Native Status: L48 (N)
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 Root Type: Fibrous Leaf Retention: Deciduous Leaf Complexity: Simple Leaf Shape: Ovate Leaf Venation: Pinnate Leaf Pubescence:
Puberulent Leaf Margin:
Undulate Leaf Apex: Obtuse Leaf Base: Cuneate Breeding System:
Flowers Bisexual Leaf:
dark-green above Flower:
Flowers 42 mm long Fruit:
1 cm Size Class:
Bloom InformationBloom Color: Purple
Bloom Time: Jun , Jul , Aug , Sep , Oct , Nov
DistributionUSA: TX Native Habitat:
Woodlands edge, Opening, Prairie, Plains, Meadows, Pastures, Savannahs
Growing ConditionsWater Use: Low
Light Requirement: Part Shade , Shade
Soil Moisture: Dry
Soil Description: Rocky soils.
Conditions Comments: Drummonds wild petunia grows handsome lavender flowers throughout the summer. Cut back old bloom stalks in the winter. It has taller flowers and is taller than Wild petunia.
Blooms ornamental, Perennial
garden Conspicuous Flowers:
Butterflies Larval Host:
Common buckeye Nectar Source:
PropagationPropagation Material: Root Division
Maintenance: Maintain moist soil, Fertilize in spring with rose food
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
Record Last Modified: 2009-03-21
Research By: TWC Staff, JSC