Dichelachne sieberiana Trin. & Rupr. Sp. Gram. Stipac. 2 (1843). Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.
Type of Basionym or
Protologue Information: HT: F.W. Sieber 63, no date, Australia: New South Wales (LE; IT: BM, K, L, P,
US-993643).
Key references
(books and floras): [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 (211), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2
(218).
Illustrations:
[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
Wales, 4th edn (211).
Habit. Annual
or perennial. Culms stature slender to delicate, 20–90 cm tall. Mid-culm
internodes pubescent. Mid-culm nodes pubescent. Leaf-sheaths hairy. Ligule a
fringed membrane, a ciliolate membrane, 1–1.5 mm long, abaxially scaberulous or
abaxially hairy, entire, truncate. Leaf-blades 3–29 cm long, 1–2.2 mm wide.
Leaf-blade surface scabrous, indumented.
Inflorescence.
Inflorescence compound, a panicle. Panicle lanceolate, 4.5–25 cm long.
Spikelets.
Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), with a barren rachilla extension, lanceolate, laterally compressed,
4–9.4 mm long.
Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate or elliptic,
hyaline, keeled, 1-keeled, 1 -nerved. Lower glume apex muticous. Upper glume
lanceolate or elliptic, 4–7.7 mm long, hyaline, keeled, 1-keeled, 1 -nerved.
Florets.
Fertile lemma 4–9 mm long, keeled, 5 -nerved. Lemma apex dentate, awned, 1
-awned. Median (principal) awn subapical, (9–)17–23 mm long overall, with a
twisted column. Lodicules present. Anthers 3. Grain 2.5–3.8 mm long.
Continental
Distribution: Australasia.
Australian
Distribution: New South Wales, Victoria, Tasmania.
New
South Wales: Central Coast, South
Coast, Northern
Tablelands, Southern Tablelands, North-Western Slopes, South-Western Slopes. Victoria: East Gippsland, Gippsland Plain,
Grampians, Midlands, Otway
Range.
Notes. Endemic. Also New Zealand.
Widespread in woodland. Flowers Dec.-Apr. Fruits Jan.-May.
AusGrass 2002
