Plinthanthesis Steud.
  • Syn. Pl. Glumac. 1: 14 (1853) 

Notes: Distribution: SE. Australia

General Description

HABIT Perennial. Culms erect (1/2), or decumbent (1/2); 25-39.16-60 cm long. Ligule a fringe of hairs. Leaf-blades filiform. INFLORESCENCE Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform. FERTILE SPIKELETS Spikelets comprising 2 fertile florets (1), or 3 fertile florets, or 4-5 fertile florets (1); without rhachilla extension, or with a barren rhachilla extension (1). Spikelets oblong; laterally compressed; 4-6.5-9 mm long; breaking up at maturity; disarticulating below each fertile floret. GLUMES Glumes persistent; shorter than spikelet (1), or reaching apex of florets (2), or exceeding apex of florets (1); gaping. Lower glume lanceolate; 1 length of upper glume; chartaceous; 1-keeled; 1-2 -veined (1), or 3 -veined. Lower glume surface smooth (1), or asperulous. Lower glume apex obtuse (1), or acute. Upper glume lanceolate; 1.3-1.7-2.2 length of adjacent fertile lemma; chartaceous; 1-keeled; 1-2 -veined (1), or 3 -veined. Upper glume surface smooth (1), or asperulous. Upper glume apex obtuse (1), or acute. FLORETS Fertile lemma oblong; chartaceous; much thinner above; of similar consistency on margins (2), or much thinner on margins (1); without keel; 9 -veined. Lemma surface pubescent (2), or pilose (1); hairy between veins. Lemma apex dentate (1), or lobed (2); 2 -fid; incised 0.25-0.375-0.5 of lemma length; obtuse (2/2), or acute (2/2); muticous (1), or mucronate (1), or awned (2); 1 -awned (2/2). Principal lemma awn apical (1), or from a sinus (2); straight (1), or curved (1), or geniculate (1). Palea 0.9-1-1.1 length of lemma; chartaceous; 2 -veined. Palea keels smooth (1), or scaberulous (2); eciliate (2), or ciliolate (1). Palea surface pubescent (2), or pilose (1). FLOWER Lodicules 2; fleshy. Anthers 3. FRUIT Caryopsis with adherent pericarp; ellipsoid (1/1). Hilum linear; 0.5 length of caryopsis. DISTRIBUTION Australasia.

Distribution Map

  • Native distribution
Found in
  • Australasia Australia New South Wales
  • Victoria


  • 1 Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

 Information From

GrassBase - The Online World Grass Flora
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
  • C See You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.