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Marcus, Joseph A.
Ambrosia trifida var. texana Scheele
Giant Ragweed, Texan great ragweed
USDA Symbol: amtrt
USDA Native Status: Native to U.S.
Plant CharacteristicsDuration: Annual Habit: Subshrub Fruit: Size Class:
Bloom InformationBloom Color: Yellow
AZ , IL , KS , LA , MO , MS , NM , OK , TX USDA Native Status: L48(N)
Herbarium Specimen(s)NPSOT 0995
Collected Oct 12, 1994 in Bexar County by Harry CliffeNPSOT 0536
Collected Jul 29, 1987 in Bexar County by Harry Cliffe
Wildflower Center Seed BankLBJWC-MM-707
Collected 2009-11-16 in Hays County by Lady Bird Johnson Wildflower Center
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Record Modified: 2007-01-01
Research By: TWC Staff