Rytidosperma nitens

Rytidosperma nitens (D.I. Morris) H.P. Linder. Telopea 6: 614 (1996).

Classification. (GPWG 2001) : Subfamily Danthonioideae. Tribe

Basionym and/or
Replacement Name:
D.I. Morris, Muelleria 7(2): 155–157, f. 7, 8a (1989).

Type of Basionym or
Protologue Information
: HT: Fletcher s.n., 21 Jan 1979, Australia:
Tasmania: Dublin Forest Block (HO-30982).

Recent synonyms:
Danthonia nitens.

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of

[2005] K.Mallet (ed.), Flora of Australia 44B: Poaceae 3 (Fig.
12, E-F).

Perennial. Culms 12–25 cm tall, 3 -noded. Leaf-sheaths glabrous on surface or
hairy. Ligule a fringe of hairs, 0.5 mm long. Leaf-blades flat or involute, 4–9
cm long, 1–1.5 mm wide. Leaf-blade surface glabrous or indumented.

Inflorescence solid, a panicle. Panicle linear, 0.9–3.5 cm long.

Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (4–6), comprising 4–6 fertile floret(s), with diminished florets at the
apex, cuneate, laterally compressed, 5.5–7.5 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, membranous,
without keels, 5–7 -nerved. Upper glume lanceolate, 6.5–7.5 mm long,
membranous, without keels, 5(–7) -nerved.

Fertile lemma 1.6–5.25 mm long, without keel, 7 -nerved. Lemma surface glabrous
or indumented. Lemma apex lobed, awned, 1 -awned. Median (principal) awn from a
sinus, 2.1–5.25 mm long overall, with a straight or slightly twisted column or
with a twisted column. Column 1 mm long. Palea apex dentate. Lodicules present.
Anthers 3. Grain 1.1–1.5 mm long.

: Australasia.

: Tasmania.

Central Highlands, East Coast.

Notes. R.
is very close to R. nivicola, from which it can be separated
by the shiny lemma, the more slender culms which are often drooping, and the
occasionally expanded leaves.

endemic, altitude 900–1200 m, stream bank flats, detritus in open woodland,
streambanks, roadsides and stony habitats, open windswept habitats. Flowers
Jan. or Feb.


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