PlantNET Home DONATE TODAY | PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
WeedAlert
Telopea Journal
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Genus Rytidosperma Family Poaceae

Synonyms: Austrodanthonia APNI*

Description: Tufted perennials.

Ligule ciliate rim; blade folded in bud, flat or convolute, usually narrow and often hairy, long hairs usually present at orifice.

Inflorescence and open to spike like and contracted panicle (occasionally a raceme) with a few spikelets, white or pale at maturity. Spikelets pedicelate, disarticulating above the glumes and between the florets, 3–9 bisexual florets, often with male or sterile florets above. Glumes subequal, acute, broad-keeled, longer than the lemma, faintly 5–7-nerved (often streaked with purple), margins translucent, gaping at maturity to reveal the hairy florets. Lemmas soft to leathery, rounded on the back with a few to many hairs more or less organised into tufts, transverse rows, or rows of tufts occasionally galbrous or with the tufts reduced, or with a more or less continuous indumentum in the lower 50%; apex deeply bilobed, the lobes acute, usually terminating in slender bristles; awn arising in the sinus between the lobes reflexed or genticulate and usually twisted; callus bearded. Palea as long as or longer than the body of the lemma, 2-keeled, keels ciliate, apex entire or bifid.

Spikelets with 3–5 florets, rachilla internodes 30–50% as long as the lemmas, disarticulating above the glumes and between the lemmas. Glumes shorter or longer than the spikelet. Lemmas minutely 3-toothed, glabrous or with scattered hairs; callus blunt. Palea glabrous, keels ciliate.


Distribution and occurrence: World: 60 species, Australia & New Zealand. Australia: 27 species all States except Northern Territory.

Rytidosperma unarede is in Lord Howe Island and not included in the key. Key based on: Simon, B.K. & Alfonso, Y. 2011. AusGrass2, http://ausgrass2.myspecies.info/category/australian-grasses/australian-grasses/rytidosperma, 10 August 2012. key reconfigured for NSW species by Louisa Murray


  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET