Rytidosperma longifolium

Rytidosperma longifolium (R. Br.) Connor
& Edgar. New Zealand J. Bot. 17: 332 (1979).

Classification. (GPWG 2001) : Subfamily Danthonioideae. Tribe

Basionym and/or
Replacement Name:
R. Br., Prodr. 176 (1810).

Type of Basionym or
Protologue Information
: HT: Brown 6231, Australia: New South Wales:
Port Jackson (BM(fragm. PERTH); IT: K).

Recent synonyms:
Danthonia longifolia, Notodanthonia longifolia (R. Br.) J.F. Veldkamp.

Key references
(books and floras):
[1810]. R.Brown, Prodromus (176 as Danthonia
), [1878] G.Bentham, Flora Australiensis 7 (593 as Danthonia
), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses
of New South Wales

[2005] K.Mallet (ed.), Flora of Australia 44B: Poaceae 3 (Fig.
9), [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New
South Wales
, 4th edn (307).

Perennial. Culms 30–75 cm tall. Leaves mostly basal. Ligule a fringe of hairs.
Leaf-blades curled, filiform, involute, 15–35 cm long, 1–2 mm wide. Leaf-blade
surface glabrous.

Inflorescence solid, a panicle. Panicle linear, 5–15 cm long.

Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (5–6), comprising 5–6 fertile floret(s), with diminished florets at the
apex, cuneate, laterally compressed, 7–12 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, scarious, without
keels, 5 -nerved. Upper glume lanceolate, 10–11 mm long, scarious, without
keels, 5 -nerved.

Fertile lemma 1.4–3 mm long, without keel, 9 -nerved. Lemma surface indumented.
Lemma apex lobed, awned, 3 -awned. Median (principal) awn from a sinus, 7–11 mm
long overall, with a twisted column. Lateral lemma awns present. Lodicules
present. Anthers 3. Grain 1.1–1.3 mm long.

: Australasia.

: Queensland, New South Wales, Victoria.

Port Curtis, Burnett, Darling Downs, Moreton. New South Wales: North
Coast, Central Coast, South Coast, Northern Tablelands, Central Tablelands,
Southern Tablelands, North-Western Slopes, Central-Western Slopes,
North-Western Plains. Victoria: East Gippsland, Eastern Highlands,
Gippsland Plain, Midlands.

Notes. R.
appears to be rather constant in its morphology. This species
is very close to N. semiannulare, and several collections discussed
under the latter species appear to be intermediate between the two taxa. It is
not easily confused with any other species.

200–1000 m (near Armidale on edge of scarp), along the east coast from southern
Queensland to the South Australian border, common in open woodland, in light
shade; often recorded from rocky places. Flowers Nov. to Dec.


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