Amphibromus

{{Short description|Genus of grasses}}

{{Use Australian English|date=July 2024}}

{{Automatic taxobox

|image = Amphibromus nervosus.jpg

|image_caption = Amphibromus nervosus

|display_parents = 4

|taxon = Amphibromus

|authority = Nees

|type_species_authority = Steud.[http://www.tropicos.org/Name/40012483 Tropicos, Amphibromus Nees ]

|type_species = Amphibromus neesii

}}

Amphibromus is a genus of grasses in the family Poaceae. Most are known as swamp wallaby grass.[https://www.biodiversitylibrary.org/page/783702#page/420/mode/1up Nees von Esenbeck, Christian Gottfried Daniel. 1843. London Journal of Botany 2: 420] in Latin[http://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:apni.taxon:396033# Atlas of Living Australia, Amphibromus Nees, Swamp Wallaby Grass]Thieret, J. W. [http://www.herbarium.usu.edu/treatments/Amphibromus.htm Amphibromus.] {{webarchive |url=https://web.archive.org/web/20160304084317/http://www.herbarium.usu.edu/treatments/Amphibromus.htm |date=March 4, 2016 }} Grass Manual. Flora of North America.[http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Amphibromus Amphibromus.] New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney.Watson, L. and M. J. Dallwitz. 1992 onwards. [http://delta-intkey.com/grass/www/amphibro.htm Amphibromus.] {{webarchive |url=https://web.archive.org/web/20121005080516/http://delta-intkey.com/grass/www/amphibro.htm |date=October 5, 2012 }} The Grass Genera of the World. 2012. Most are endemic to Australia. One can also be found in New Zealand and there are two species in South America.

These are annual or perennial grasses. Some can have cleistogamous inflorescences sheathed on their stems. The open inflorescences may be spreading or spikelike. These may have some cleistogamous spikelets in them, as well.

Most species occur in moist to wet habitat types. Some tolerate periodic flooding well, even flowering in response to it.

; Species[http://apps.kew.org/wcsp/namedetail.do?name_id=391665 Kew World Checklist of Selected Plant Families]Swallen, J. R. 1931. The grass genus Amphibromus. American Journal of Botany 18: 411–415Smith, L. B., D. C. Wasshausen & R. M. Klein. 1982. Gramíneas. Gêneros: 45. Deschampsia até 84. Pseudechinolaena. 1(GRAM): 443–906. In P. R. Reitz (ed.) Flora Ilustrada Catarinense. Herbário "Barbosa Rodrigues", Itajaí, Brasil

• Amphibromus archeri - pointed swamp wallaby grass - South Australia, Tasmania, Victoria
• Amphibromus fluitans - river swamp wallaby grass, graceful swamp wallaby grass - Tasmania, Victoria, New South Wales, New Zealand (North + South Is)
• Amphibromus macrorhinus - long-nosed swamp wallaby grass - South Australia, Tasmania, Victoria, New South Wales, Western Australia
• Amphibromus neesii - southern swamp wallaby grass - Tasmania, Victoria, New South Wales; naturalized in California
• Amphibromus nervosus - common swamp wallaby grass, veined swamp wallaby grass - South Australia, Victoria, New South Wales, Western Australia
• Amphibromus pithogastrus - plump swamp wallaby grass - Victoria, New South Wales
• Amphibromus quadridentulus - Brazil (Rio Grande do Sul, Santa Catarina, Paraná, Rio de Janeiro, Minas Gerais), Argentina (Entre Ríos, Misiones), Uruguay
• Amphibromus recurvatus - dark swamp wallaby grass - South Australia, Tasmania, Victoria
• Amphibromus scabrivalvis - rough amphibromus - Bolivia (La Paz), Brazil, Argentina, Chile, Uruguay, Peru; naturalized in Louisiana
• Amphibromus sinuatus - wavy swamp wallaby grass - Tasmania, Victoria, New South Wales
• Amphibromus vickeryae - Western Australiaconsidered 'probably extinct' - page 7 of {{Citation | author1=Bell, Una | author2=Bell, Una | title=Common native grasses of south-west WA | date=2008 | publisher=[Mundaring, Western Australia] [Una Bell] | url=http://trove.nla.gov.au/work/28034620 | accessdate=30 October 2016 }}
• †Amphibromus whitei small swamp wallaby grass - †Queensland but extinct[http://www.environment.gov.au/cgi-bin/sprat/public/publicspecies.pl?taxon_id=3590 Amphibromus whitei.] Species Profile and Threats Database. Department of Sustainability, Environment, Water, Population and Communities. Australia.