Linaceae
Stiffstem flax
Linum rigidum
- Family
- Linaceae
- Genus
- Linum
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Common names
By language (1)
- English
- Stiffstem flax
Synonyms
- Cathartolinum rigidum (Pursh) Small
- Mesynium rigidum (Pursh) Á.Löve & D.Löve
- Nezera rigida (Pursh) Nieuwl.
Flowers
- In flower
- April to July (from 135 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual, Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
FlowerPhoto: dghjertaas, CC0, from iNaturalist 
FlowerPhoto: Michelle W. （鍾偉瑋）, CC BY 4.0, from iNaturalist 
FlowerPhoto: Linda Jo Conn, CC BY 4.0, from iNaturalist 
FlowerPhoto: Jo Roberts, CC BY 4.0, from iNaturalist 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Sam Kieschnick, CC BY 4.0, from iNaturalist 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Brandon Corder, CC BY 4.0, from iNaturalist 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Sam Kieschnick, CC BY 4.0, from iNaturalist 
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Sam Kieschnick, CC BY 4.0, from iNaturalist
More in Linum
- FlaxLinum usitatissimumLinaceae
- Fairy flaxLinum catharticumLinaceae
- Linum flavumLinaceae
- Blue flaxLinum perenneLinaceae
- FlaxLinum narbonenseLinaceae
- Asian flaxLinum austriacumLinaceae
- Flowering flaxLinum grandiflorumLinaceae
- Pale flaxLinum bienneLinaceae
- Linum tenuifoliumLinaceae
- Lewis flaxLinum lewisiiLinaceae
- Linum suffruticosumLinaceae
- Linum hirsutumLinaceae
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.