Catapodium rigidum var. spicatum(Trab.) O.Bolòs & Vigo
Catapodium zwierleinii(Lojac.) Brullo
Desmazeria rigida(L.) Tutin
Desmazeria rigida subsp. hemipoa(Delile ex Spreng.) Stace
Desmazeria rigida var. major(C.Presl) Stace
Desmazeria rigida var. spicata(Trab.) O.Bolòs & Vigo
Diplachne rigida(L.) Chapm.
Festuca divaricataRoth
Festuca hemipoaDelile ex Spreng.
Festuca maritima subsp. hemipoa(Delile ex Spreng.) Ball
Festuca rigensTrin. ex Steud.
Festuca rigida(L.) Raspail
Glyceria rigida(L.) Sm.
Megastachya pulchellaRoem. & Schult.
Megastachya rigida(L.) Roem. & Schult.
Poa cristataWalter
Poa hemipoa(Delile ex Spreng.) Loret & Barrandon
Poa pulchellaSteven ex M.Bieb.
Poa rigidaL.
Sclerochloa filiformisTornab.
Sclerochloa hemipoa(Delile ex Spreng.) Guss.
Sclerochloa patensC.Presl
Sclerochloa racemosa(Sennen) Sennen
Sclerochloa rigida(L.) Link
Sclerochloa rigida var. majorC.Presl
Sclerochloa zwierleiniiLojac.
Scleropoa hemipoa(Delile ex Spreng.) Parl.
Scleropoa racemosaSennen
Scleropoa rigida(L.) Griseb.
Scleropoa rigida subsp. hemipoa(Delile ex Spreng.) Bonnier & Layens
Scleropoa subspicataSennen
Scleropoa villarisSennen & Mauricio
Synaphe rigida(L.) Dulac
Triticum hemipoa(Delile ex Spreng.) Delile ex Ten.
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]
Identification
The flowerhead is branched and has a ridged stem
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]