Triodia lanigera

Triodia lanigera
Domin. J. Linn. Soc., Bot. 41: 278 (1912).

Classification. (GPWG 2001) : Subfamily
Chloridoideae. Triodeae.

Type of Basionym or
Protologue Information
: Western Australia: Eremaean Province; between the
Ashburton and Yule rivers, Dr E. Clement s.n. (HT: K; IT: K, Perth

Key references
(books and floras):
[1952] C.A.Gardner, Flora of Western Australia 1
Gramineae (73), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of

[1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (69,
Pl. 19).

Perennial. Culms 30–100 cm tall. Mid-culm nodes pubescent. Leaf-sheaths hairy.
Ligule a fringe of hairs. Leaf-blades straight, aciculate, conduplicate,
(1.5–)9–21 cm long, 0.8–1 mm wide.

Inflorescence compound, a panicle. Panicle (3.5–)6–13 cm long, 1–2(–3) cm wide.

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, 7–19(–25) mm long.

Glumes similar, thinner than fertile lemma. Lower glume lanceolate or oblong,
scarious, without keels, 7–9(–15) -nerved. Lower glume surface glabrous or
indumented. Lower glume apex mucronate. Upper glume lanceolate or oblong,
6–11(–14) mm long, scarious, without keels, 7–9(–15) -nerved. Upper glume
surface glabrous or indumented. Upper glume apex entire or lobed, mucronate.

Fertile lemma 6–14 mm long, without keel, 9–19 -nerved. Lemma surface
indumented. Lemma apex lobed, muticous. Anthers 3.

: Australasia.

: Western Australia.

Western Australia:
Gardner, Dampier. Fortescue, Ashburton, Carnarvon, Austin.

Distinguished by its deeply lobed bitextured lemmas, the lobes dissimilar in
size, shape, nervation and indumentum; subequal, scarious many-nerved glumes,
long relative to spikelet; bitextured, mostly glabrous and smooth palea with
thickened curved keels; relatively long-hairy, curved, pointed callus; loosely
flowered spikelet; narrow, dense, simple panicle; plano-convex pallid caryopsis
with prominent embryo; woolly indumentum on foliage.

NW W.A., between 17°S and 28°S and W of 124°E. Red
siliceous sandplain, gravel plain with red-brown sandy loam over clay, clay
soil, near water, rocky outcrops of acid rocks, colluvial flat in dunefield,
granite and skeletal stony red earths, seasonally flooded plains, pindan,
calcrete mesa; flowers Jan.-Oct


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