Avena strigosa*

Avena strigosa* Schreb. Spic. Fl. Lips. 52 (1771).

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

Key references
(books and floras):
[1810]. R.Brown, Prodromus (178 as A. nervosa),
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2008]
S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New South Wales
(163), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2

[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
, 4th edn (163).

Habit. Annual.
Culms erect or geniculately ascending, 60–150 cm tall, 3–5 -noded. Leaves
cauline. Ligule an eciliate membrane, 2–5 mm long. Leaf-blades 8–40 cm long,
3–12 mm wide. Leaf-blade surface scaberulous.

Inflorescence compound, a panicle. Panicle ovate, 8–30 cm long, 3–10 cm wide.

Spikelets pedicelled. Fertile spikelets 1 or more flowered, with 1 fertile floret
(2–3), comprising 2–3 fertile floret(s), with a barren rachilla extension,
cuneate, laterally compressed, 17–26 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, membranous,
without keels, 5–9 -nerved. Upper glume lanceolate, 14–26 mm long, membranous,
without keels, 5–9 -nerved.

Fertile lemma 10–17 mm long, without keel, 7 -nerved. Lemma surface glabrous or
indumented. Lemma apex dentate, awned, 3 -awned. Median (principal) awn dorsal,
20–35 mm long overall, with a twisted column. Lateral lemma awns present.
Anthers 3.

: Europe, Africa, Australasia, and South America.

: Victoria, Tasmania.

Midlands. Tasmania: East Coast.

Introduced. Recorded in Tas., Vic., N.S.W. and W.A.??. Native to parts of
Europe. A weed of cereal, mostly oat crops; apparently rare. Flowers Dec.-Jan.


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