Dinebra decipiens (R. Br.) P.M.Peterson & N.Snow. Ann. Bot. 109: 1326 (2012).
Classification. (GPWG 2001) : Subfamily Chloridoideae. Cynodonteae.
Basionym and/or
Replacement Name: Poa decipiens
R. Br., Prodr. 181 (1810).
Type of Basionym or
Protologue Information: HT: Brown 6271, Australia:
Queensland: Port Curtis Distr.: Keppel Bay
(BM; IT: E, K).
Recent synonyms:
Leptochloa ciliolata, L. debilis, L. decipiens.
Key references
(books and floras): [1878] G.Bentham, Flora Australiensis 7 (643 as Eragrostis
imbecilla), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
Australia, as Leptochloa, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses
of New South Wales (293 & 295 as Leptochloa asthenes & L.
peacockii).
Illustrations:
[2005] K.Mallet (ed.), Flora of Australia 44B: Poaceae 3
(Fig. 79C), as Leptochloa [1984] N.T.Burbidge. rev. S.W.L.Jacobs, Australian Grasses as Leptochloa (175).
Habit.
Perennial. Culms stature slender to delicate, 16–150 cm tall, wiry. Lateral
branches simple or sparsely branched or branched. Ligule an eciliate membrane
or a fringed membrane, a ciliolate membrane, 0.8–2 mm long, lacerate.
Leaf-blades 1.7–21 cm long, 2–5 mm wide. Leaf-blade surface scabrous, glabrous
or indumented.
Inflorescence.
Inflorescence compound, a panicle of racemes. Racemes 5–25, 5–16 cm long.
Central inflorescence axis 4–50 cm long.
Spikelets.
Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets, comprising 3–8 fertile floret(s), with diminished florets at the apex,
oblong, laterally compressed, 2.5–6 mm long.
Glumes. Lower
glume lanceolate or ovate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume
elliptic or oblong or ovate or obovate, 1.2–2.5 mm long, membranous, keeled,
1-keeled, 1 -nerved.
Florets.
Fertile lemma 1.5–2.8 mm long, keeled, 3 -nerved. Lemma apex mucronate. Palea 2
-nerved.
Continental
Distribution: Australasia.
Australian
Distribution: Queensland, New South Wales.
Queensland:
Cook, North Kennedy, South Kennedy, Port Curtis, Leichhardt, Burnett, Wide Bay,
Darling Downs, Moreton, Mitchell, Warrego,
Maranoa. New South Wales: North Coast,
Central Coast, Northern Tablelands,
North-Western Slopes, Central-Western Slopes, North-Western Plains.
Infra-specific
taxa: subsp. decipiens, subsp. asthenes, subsp. peacockii .
1. Leaves hairy; lemmas
densely bearded on the margin D. decipiens subsp. peacockii
Leaves glabrous; lemmas shortly hairy on the
margin 2
2. Racemes bearing
spikelets to or almost to the base D decipiens subsp. decipiens
Racemes naked near the base D. decipiens subsp. asthenes
