Amphibromus recurvatus Swallen. Amer. Journ. Bot. 18: 415 (1931).
Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.
Type of Basionym or
Protologue Information: Australia: collected in Broad River Valley National
Park, Tasmania, Feb 1919, L. Rodway 1225 (HT: US-1447361) Swallen
erroneously cited the collector as R.A. Black and the year as 1929, fide:
Jacobs & Lapinpuro, Telopea 2: 719 (1986).
Recent synonyms:
Helictotrichon recurvatum (Swallen) T.A.Cope & T.B.Ryves.
Key references
(books and floras): [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
Australia, [2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South
Australia (199), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A.
Poaceae 2 (131).
Illustrations:
[2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia (199, fig. 148), [2009]. A.Wilson (ed.),
Flora of Australia 44A: Poaceae 2 (135, Fig 20).
Derivation: L.
reflexed. Spikelets with spreading or reflexed awns.
Habit.
Perennial. Culms erect, 80–150 cm tall, 1–1.5 mm diam., 3–5 -noded. Mid-culm
nodes glabrous. Leaf-sheaths smooth or scaberulous. Ligule an eciliate
membrane, 4–11 mm long, acute. Leaf-blades flat or involute, 15–30 cm long,
2–3.5 mm wide. Leaf-blade surface scabrous, glabrous.
Inflorescence.
Inflorescence compound, a panicle. Panicle 10–30 cm long.
Spikelets.
Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (3–6), comprising 3–6 fertile floret(s), with a barren rachilla
extension or with diminished florets at the apex, oblong, laterally compressed,
7–11 mm long.
Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, membranous, much
thinner above, much thinner on margins, keeled, 1-keeled, 1–3 -nerved. Upper
glume elliptic, 4–5.5 mm long, membranous, keeled, 1-keeled, 3–5 -nerved.
Florets.
Fertile lemma 4–5.5 mm long, without keel, 5–7 -nerved. Lemma surface
indumented. Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal,
9–18 mm long overall, with a straight or slightly twisted column. Column
3.3–3.5 mm long. Lodicules present. Anthers 3. Grain 1.8–2.3 mm long.
Continental
Distribution: Australasia.
Australian
Distribution: South Australia, Victoria, Tasmania.
South Australia:
Kangaroo Island, South-eastern. Victoria: East Gippsland, Gippsland
Plain, Grampians, Otway Plain, Volcanic Plain, Wannon. Tasmania: North
West, North East, West Coast, Central Highlands, East Coast, South West, Mt
Field.
Notes. Endemic.
In wet areas such as lagoons, swamps and mountain tarns, from sea-level to
about 1100 m. Flowers Nov.-Jan.
