Apiaceae
Ribbed mock bishopweed
Ptilimnium costatum
- Family
- Apiaceae
- Genus
- Ptilimnium
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Common names
By language (2)
- Chinese
- 丝裂芹, 大丝裂芹
- English
- Ribbed mock bishopweed
Synonyms
- Ammi costatum Elliott
- Discopleura capillacea var. costata A.Gray
- Discopleura costata Steud.
- Discopleura costata (Elliott) Chapm.
- Ptilimnium missouriense J.M.Coult. & Rose
- Sison costatus (Ell.) Eaton
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: native
Photos

FlowerPhoto: Alison Northup, CC BY 4.0, from iNaturalist 
FlowerPhoto: Laura Clark, CC BY 4.0, from iNaturalist 
FlowerPhoto: Laura Clark, CC BY 4.0, from iNaturalist 
FlowerPhoto: Brian Finzel, CC BY-SA 4.0, from iNaturalist 
FlowerPhoto: Sam Kieschnick, CC BY 4.0, from iNaturalist 
FlowerPhoto: Laura Clark, CC BY 4.0, from iNaturalist 
FlowerPhoto: Mason Brock, CC0, from iNaturalist 
FlowerPhoto: Laura Clark, CC BY 4.0, from iNaturalist 
FruitPhoto: Sam Kieschnick, CC BY 4.0, from iNaturalist 
Photo: Samuel Buckner, CC BY 4.0, from iNaturalist 
Photo: Ryan Sorrells, CC BY 4.0, from iNaturalist 
Photo: John Kees, CC0, from iNaturalist
More in Ptilimnium
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.