Poaceae
Ferngrass
Catapodium rigidum
- Family
- Poaceae
- Genus
- Catapodium
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Common names
By language (8)
- Croatian
- Kruta ljuljolika
- Dutch
- Stijf hardgras
- English
- Ferngrass, Fern-grass
- Finnish
- Tankisoulo
- French
- Catapode rigide, Pâturin rigide
- German
- Gemeines Steifgras, Steifgras
- Swedish
- Styvgröe
- Welsh
- Gwenithwellt caled
Synonyms
- Catapodium rigidum var. rigidum
- Desmazeria rigida (L.) Tutin
- Diplachne rigida (L.) Chapm.
- Festuca rigida (L.) Raspail
- Festuca rigida var. hemipoa (Delile) Coss. & Durieu
- Glyceria rigida Sm.
- Megastachya rigida (L.) Roem. & Schult.
- Poa rigida L.
- Sclerochloa rigida P.Beauv.
- Sclerochloa rigida var. hemipoa (Spreng.) Fiori
- Scleropoa rigida (L.) Griseb.
- Scleropoa rigida Griseb.
- Scleropoa rigida var. hemipoa (Delile) Bonnier & Barratte
- Scleropoa rigida var. patens (J.Presl) Duval-Jouve
- Scleropoa zwierleinii Lojac.
- Synaphe rigida (L.) Dulac
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: introduced
Photos
FlowerPhoto: Alice Shanks, CC BY 4.0, from iNaturalist 
FlowerPhoto: Daniel Cahen, CC BY 4.0, from iNaturalist 
FlowerPhoto: Dave Richardson, CC BY 4.0, from iNaturalist 
FlowerPhoto: Karim Haddad, CC BY 4.0, from iNaturalist 
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist 
Photo: Harry Rose from Dungog, Australia, CC BY 2.0, from Wikimedia Commons 
Photo: Benjamin Lavin, CC BY 4.0, from iNaturalist 
Photo: Harry Rose from Dungog, Australia, CC BY 2.0, from Wikimedia Commons 
Photo: Salem De La Luna, CC BY 4.0, from iNaturalist 
Photo: Ewen Cameron, CC BY 4.0, from Wikimedia Commons 
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist 
Photo: AudreyMuratet, CC BY-SA 4.0, from Wikimedia Commons
More in Catapodium
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.