Ectrosia lasioclada

Ectrosia lasioclada (Merr.) S.T.
Blake. Proc. Roy. Soc. Queensland 84: 65 (1973).

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

Basionym and/or
Replacement Name:
Merr., Philipp. J. Sci. 1(Suppl.): 382 (1906).

Type of Basionym or
Protologue Information
: IT: E.D. Merrill 461, 13 Dec 1902,
Philippines: Palawan I., Palawan Prov. (L, US-435431). CS\Collection no.
. as 416.

Recent synonyms:
E. eragrostoides, E. subaristata, Ectrosiopsis lasioclada.

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

Habit. Annual
or perennial. Culms 30–90 cm tall. Ligule a fringe of hairs. Leaf-blades 10–30
cm long, 1–3.1 mm wide. Leaf-blade surface glabrous.

Inflorescence. Inflorescence
compound, a panicle. Panicle oblong or ovate, 5–20 cm long.

Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets ((3-)5–25), comprising (3–)5–25 fertile floret(s), with diminished
florets at the apex, linear or oblong, laterally compressed, 5–18 mm long.

Glumes. Glumes
similar. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper
glume lanceolate, 1–2 mm long, membranous, keeled, 1-keeled, 1 -nerved.

Fertile lemma 1.8–3 mm long, keeled, 3 -nerved. Lemma surface glabrous. Lemma
apex muticous or awned, 1 -awned. Median (principal) awn 0–1.5 mm long overall.
Palea 2 -nerved. Anthers 3.

: Tropical Asia, Australasia, and Pacific.

: Western Australia, Northern Territory, Queensland.

Western Australia:
Gardner. Northern Territory: Victoria River, Central Australia North. Queensland:
Burke, Cook, North Kennedy, Port Curtis.

Native; distributed through the northern half of Qld, away from the Gulf, with
scattered occurrences in the Kimberley, W.A. and N.T. Also in the Philippines,
Aru Is. (in the Moluccas) and southern New Guinea. Mainly on sandy soils on the
edge of clay pans, with other grasses in savanna woodland or forest.

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