Deyeuxia lawrencei

Deyeuxia lawrencei Vickery. Contr. New South Wales Natl. Herb. 1: 48 (1940).

Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.

Type of Basionym or Protologue Information: Australia, Tasmania: Lawrence 12 (K holo).

Key references (books and floras): [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2 (197).

Habit. Perennial. Culms erect, stature robust to moderate, 50–60 cm tall, 3 -noded. Mid-culm nodes glabrous. Leaves mostly basal. Ligule an eciliate membrane, 2–5 mm long, membranous, lacerate, obtuse. Leaf-blades linear, flat or involute, 4–15 cm long, 1.5–4 mm wide. Leaf-blade surface scabrous.

Inflorescence. Inflorescence solid, a panicle. Panicle linear or oblong, dense, 9 cm long, 1 cm wide.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), without rachilla extension or with a barren rachilla extension, lanceolate, laterally compressed, 7–8 mm long.

Glumes. Glumes similar, firmer than fertile lemma. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume surface asperulous.

Florets. Fertile lemma 4–5 mm long, without keel, 5 -nerved. Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal, 8–10 mm long overall, with a twisted column. Palea apex erose. Lodicules present. Anthers 3.

Continental Distribution: Australasia.

Australian Distribution: Tasmania.

Tasmania: Midlands.

Notes. Endemic.  


Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith