Potamophila parviflora R. Br. Prodr. 211 (1810.
Classification. (GPWG 2001) : Subfamily
Ehrhartoideae. Tribe Oryzeae.
Type of Basionym or
Protologue Information: Australia,
Port Jackson: Brown 5171 (K iso).
Key references
(books and floras): [1810]. R.Brown, Prodromus (211), [1878]
G.Bentham, Flora Australiensis 7 (550), [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 (357), [2009] A.Wilson (ed.). Flora
of Australia,
Vol 44A. Poaceae 2 (369).
Illustrations:
[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
Wales, 4th edn (357), [2009]. A.Wilson (ed.), Flora of Australia 44A:
Poaceae 2 (363, Fig. 49).
Habit.
Perennial. Rhizomes present, elongated. Culms aquatic, stature reed-like,
30–150 cm tall, 3–7 mm diam. Ligule an eciliate membrane, 4–15 mm long,
lacerate, acute. Leaf-blades flat or involute, 20–50 cm long, 4–6 mm wide.
Inflorescence.
Inflorescence compound, a panicle. Panicle lanceolate, 15–45 cm long.
Spikelets.
Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 2 basal sterile
florets, comprising 1 fertile floret(s), without rachilla extension, lanceolate
or oblong, laterally compressed, 3–5.5 mm long.
Glumes. Upper
glume 0.1 mm long. Florets. Basal sterile florets 2 or more, barren,
without significant palea. Lemma of lower sterile floret membranous, 0 -nerved.
Fertile florets bisexual (or some unisexual).
Fertile lemma 3–5.5 mm
long, without keel, 5 -nerved. Palea 3 -nerved, without keels. Lodicules
present. Anthers 6.
Continental
Distribution: Australasia.
Australian
Distribution: New South Wales.
New
South Wales: North
Coast.
Notes.
Restricted to northern N.S.W. Grows in or beside riverbeds. Flowers summer,
Nov.-Jan.
