Asteraceae
Flatspine bur ragweed
Ambrosia acanthicarpa
- Family
- Asteraceae
- Genus
- Ambrosia
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Common names
By language (1)
- English
- Flatspine bur ragweed, Annual bursage, Flatspine burr ragweed, Sandbur, Annual bur-sage, Annual burrweed, Hooker's bur-ragweed, Western sand-bur
Synonyms
- Franseria acanthicarpa Coville
- Franseria californica Gand.
- Franseria hookeriana Nutt.
- Franseria montana Nutt.
- Franseria palmeri Rydb.
- Gaertneria acanthicarpa (Hook.) Britton
- Gaertneria hookeriana (Nutt.) Kuntze
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons Photo: Blake Allee, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons
More in Ambrosia
- Annual ragweedAmbrosia artemisiifoliaAsteraceae
- Cuman ragweedAmbrosia psilostachyaAsteraceae
- Great ragweedAmbrosia trifidaAsteraceae
- Peruvian ragweedAmbrosia peruvianaAsteraceae
- BurrobushAmbrosia dumosaAsteraceae
- Ambrosia-leaf bursageAmbrosia ambrosioidesAsteraceae
- Weakleaf bur ragweedAmbrosia confertifloraAsteraceae
- Ambrosia arborescensAsteraceae
- Silver bur ragweedAmbrosia chamissonisAsteraceae
- Tucson bur ragweedAmbrosia cordifoliaAsteraceae
- Triangle bur ragweedAmbrosia deltoideaAsteraceae
- Dwarf bur ragweedAmbrosia pumilaAsteraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.