Catapodium rigidum, ferngrass, is a species of annual grass in the family Poaceae (true grasses), distributed around the Mediterranean and the Middle East. It has been widely introduced throughout drier parts of the world, including parts of North America, South America, South Africa, Korea, Australia, and New Zealand.[1] Individuals can reach 20 cm (8 in).[2]
| Catapodium rigidum | |
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| habit | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Catapodium |
| Species: | C. rigidum
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| Binomial name | |
| Catapodium rigidum | |
| Synonyms[1] | |
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List
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Identification
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Fern-grass can be difficult to distinguish from sea fern-grass in places where they occur together, but it has a more open panicle and the stalk to the inflorescence is ridged, whereas it is rounded on one side in sea fern-grass.[3][4]
Subtaxa
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The following subtaxa are accepted:[1]
- Catapodium rigidum subsp. hemipoa (Delile ex Spreng.) Kerguélen - more narrowly distributed from Macaronesia and the Mediterranean to Iran
- Catapodium rigidum var. majus (C.Presl) M.Laínz - Middle East
- Catapodium rigidum subsp. rigidum – entire range, including introductions
References
edit- ^ a b c "Catapodium rigidum (L.) C.E.Hubb". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 23 March 2022.
- ^ "Catapodium rigidum (L.) C.E.Hubb. - Encyclopedia of Life". eol.org. Retrieved 2022-02-04.
- ^ Cope, Tom; Gray, Alan (2009). Grasses of the British Isles. London: Botanical Society of the British Isles. ISBN 978-0-901158-420.
- ^ Stace, C.A. (2019). New Flora of the British Isles (4th ed.). Suffolk: C&M Floristics. ISBN 978-1-5272-2630-2.