Thinopyrum distichum*

Thinopyrum distichum* (Thunb.) Á.Löve.
Feddes Repert. 95: 476 (1984).

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

Basionym and/or
Replacement Name:
 Triticum
distichum
Thunb., Prodr. Pl. Cap. 23 (1794).

Type of Basionym or
Protologue Information
: South Africa, Cape: Thunberg .

Recent synonyms:
Agropyron distichum (Thunb.) P.Beauv.

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 (104).

Habit.
Perennial. Rhizomes present. Culms stature robust to moderate, 40–60 cm tall.
Leaves cauline. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane.
Leaf-blades flat or involute, 20–40 cm long, 5–7 mm wide.

Inflorescence.
Racemes 1, erect, linear or oblong, 6–25 cm long. Rhachis fragile at the nodes.

Spikelets.
Spikelets sessile. Fertile spikelets comprising 5–11 fertile floret(s), with
diminished florets at the apex, oblong, laterally compressed, (16–)28–40 mm
long.

Glumes. Glumes
similar. Lower glume oblong, coriaceous, without keels, 9–11 -nerved. Upper
glume oblong, coriaceous, without keels, 9–11 -nerved.

Florets.
Fertile lemma 15–19 mm long, without keel, 7–11 -nerved. Lemma apex dentate.
Palea 2 -nerved. Lodicules present. Anthers 3. Grain 10 mm long.

Continental
Distribution
: Africa and Australasia.

Australian
Distribution
: Western Australia.

Western Australia:
Irwin, Drummond.

 

AVH 2011

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