Thyridolepis xerophila

Thyridolepis xerophila (Domin) S. T Blake.
Contr. Queensland Herb.13: 33 (1972).

(GPWG 2001) : Subfamily Panicoideae. Neurachneae.

Basionym and/or
Replacement Name:
Domin, Biblioth. Bot.85: 284 (1915).

Type of Basionym or
Protologue Information
: Australia, Jericho: Domin (PR holo).

Recent synonyms:
Neurachne xerophila.

Key references
(books and floras):
[1981] M.Lazarides in J.Jessop (ed)., Flora of
Central Australia
(485), [2002] D.Sharp & B.K.Simon, AusGrass,
Grasses of Australia
, [2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses
of South Australia
(506), [2008] S.W.L.Jacobs, R.D.B.Walley &
D.J.B.Wheeler, Grasses of New South Wales (386).

[2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia  (506,Fig. 435), [2008] S.W.L.Jacobs,
R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn

Perennial. Culms erect or geniculately ascending, 15–70 cm tall, 5–9 -noded.
Mid-culm internodes pubescent. Mid-culm nodes pubescent. Ligule a fringe of
hairs, 0.3–0.6 mm long. Leaf-blades flat or involute, 1.5–9 cm long, 1–4 mm

Inflorescence solid, a raceme. Panicle linear or oblong, 1.5–4 cm long.

Spikelets pedicelled. Fertile spikelets 2-flowered, the lower floret barren
(rarely male), the upper fertile, comprising 1 basal sterile florets,
comprising 1 fertile floret(s), without rachilla extension, lanceolate,
dorsally compressed, 3.9–5.3 mm long. Rhachilla internodes elongated between

Glumes dissimilar, thinner than fertile lemma. Lower glume oblong or ovate,
cartilaginous, without keels, 7–9 -nerved. Lower glume surface glabrous. Upper
glume lanceolate, 3.4–4.9 mm long, chartaceous or cartilaginous, without keels,
7–9 -nerved. Upper glume surface glabrous or indumented. Upper glume apex
entire or dentate. Florets. Basal sterile florets 1, barren, without
significant palea. Lemma of lower sterile floret 60–70 % of length of spikelet,
membranous or chartaceous, 5 -nerved.

Fertile lemma 2.9–4 mm
long, without keel. Palea 2 -nerved. Anthers 3.

: Australasia.

: Western Australia, Northern Territory, South Australia,
Queensland, New South Wales.

Western Australia:
Helms. Northern Territory: Central Australia South. South Australia:
North-western. Queensland: Darling Downs, Gregory South, Leichhardt,
Maranoa, Mitchell, South Kennedy, Warrego. New South Wales:
Central-Western Slopes, North-Western Plains.

Notes. In dry
sclerophyll forests, temperate sub-humid woodlands, semi-arid shrub woodlands,
acacia shrublands, and arid hummock grasslands. Flowers sporadically throughout
the year.


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