Gentianaceae
American spurred gentian
Halenia deflexa
- Family
- Gentianaceae
- Genus
- Halenia
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Common names
By language (1)
- English
- American spurred gentian
Synonyms
- Halenia brentoniana Griseb.
- Halenia corniculata subsp. deflexa (Sm.) Hultén
- Halenia deflexa f. deflexa
- Halenia deflexa f. heterantha (Fernald) Fernald
- Halenia deflexa subsp. brentoniana (Griseb.) J.M.Gillett
- Halenia deflexa var. brentoniana (Griseb.) A.Gray
- Halenia deflexa var. deflexa
- Halenia deflexa var. heterantha Fernald
- Halenia heterantha Griseb.
- Halenia michauxiana G.Don
- Swertia americana Spreng.
- Swertia deflexa Sm.
- Swertia michauxiana Schult.
- Tetragonanthus brentonianus (Griseb.) A.Heller
- Tetragonanthus deflexus (Sm.) Kuntze
- Tetragonanthus deflexus var. brentonianus (Griseb.) Britton
- Tetragonanthus deflexus var. heteranthus (Griseb.) Britton
- Tetragonanthus heterantha (Griseb.) A.Heller
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Canada: native, Lower 48 states: native, St. Pierre and Miquelon: native
Photos

Photo: Superior National Forest, CC BY 2.0, from Wikimedia Commons 
Photo: Superior National Forest, CC BY 2.0, from Wikimedia Commons 
Photo: Superior National Forest, CC BY 2.0, from Wikimedia Commons 
Photo: Dustin Snider, CC BY 4.0, from Wikimedia Commons 
Photo: Dustin Snider, CC BY 4.0, from Wikimedia Commons
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- Halenia majorGentianaceae
- Mt. Graham spurred gentianHalenia recurvaGentianaceae
- Halenia rhyacophilaGentianaceae
- Halenia umbellataGentianaceae
- Halenia longicaulisGentianaceae
- Halenia minimaGentianaceae
- Halenia pulchellaGentianaceae
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.