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Ambrosia trifida var. texana
Ambrosia trifida L. var. texana Scheele
Texan Great Ragweed, Giant Ragweed
Asteraceae (Aster Family)
Synonym(s): Ambrosia aptera, Ambrosia trifida var. aptera
USDA Symbol: AMTRT
USDA Native Status: L48 (N)
Plant Characteristics
Duration: AnnualHabit: Subshrub
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Elliptic , Lanceolate , Ovate
Leaf Base: Cuneate , Truncate
Size Notes: Up to about 12 feet tall, often shorter.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom Information
Bloom Color: YellowBloom Time: Jul , Aug , Sep , Oct , Nov
Distribution
USA: AZ , IL , KS , LA , MO , MS , NM , OK , TXFrom the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Lady Bird Johnson Wildflower Center - Austin, TX
Nueces River Authority - Uvalde, TX
Herbarium Specimen(s)
NPSOT 0536 Collected Jul 29, 1987 in Bexar County by Harry CliffeNPSOT 0995 Collected Oct 12, 1994 in Bexar County by Harry Cliffe
Wildflower Center Seed Bank
LBJWC-MM-707 Collected 2009-11-16 in Hays County by Lady Bird Johnson Wildflower CenterWeb Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Additional resources
USDA: Find Ambrosia trifida var. texana in USDA PlantsFNA: Find Ambrosia trifida var. texana in the Flora of North America (if available)
Google: Search Google for Ambrosia trifida var. texana
Metadata
Record Modified: 2022-10-12Research By: TWC Staff