Apiaceae
Herbwilliam
Ptilimnium capillaceum
- Family
- Apiaceae
- Genus
- Ptilimnium
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![Herbwilliam: Rough map of Angelica triquinata distribution, based upon data and [:File:North America map with states and provinces.svg] Red: commonly reported Pink: isolated](https://upload.wikimedia.org/wikipedia/commons/6/67/Map_of_Ptilimnium_capillaceum_distribution.png)
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Common names
By language (1)
- English
- Herbwilliam
Synonyms
- Ammi capillaceum Michx.
- Ammi majus Walter
- Ammi rubricaule Hornem.
- Discopleura capillacea DC.
- Discopleura juncea (Raf.) Steud.
- Discopleura major Britton, Sterns & Poggenb.
- Ptilimnium junceum Raf.
- Sison capillaceum Spreng.
- Sison rubricaule (Hornem.) Eaton & Wright
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: native, Puerto Rico: native
Photos
![Herbwilliam: Rough map of Angelica triquinata distribution, based upon data and [:File:North America map with states and provinces.svg] Red: commonly reported Pink: isolated](https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Map_of_Ptilimnium_capillaceum_distribution.png/500px-Map_of_Ptilimnium_capillaceum_distribution.png)
Photo: Qwertygiy, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Claire Herzog, CC BY 4.0, from Wikimedia Commons 
Photo: Claire Herzog, CC BY 4.0, from Wikimedia Commons 
Photo: Claire Herzog, CC BY 4.0, from Wikimedia Commons 
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons
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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.