Lachnagrostis adamsonii

Lachnagrostis adamsonii
(Vickery)S.W.L.Jacobs. Telopea 9:445(2001).

Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.

Basionym and/or
Replacement Name:
Vickery, Contr. New
South Wales Natl. Herb.
1: 107 (1941).

Type of Basionym or
Protologue Information
: HT: Adamson 226, 12 Nov 1853, Australia: Victoria: Melbourne (K).

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
[2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2

Habit. Annual
or perennial. Culms erect or geniculately ascending, 45–70 cm tall, 5 -noded.
Mid-culm nodes glabrous. Leaf-sheaths scaberulous. Ligule an eciliate membrane,
3–6 mm long, abaxially scaberulous, lacerate. Leaf-blades linear, flat or
conduplicate, 8–25 cm long, 1–3.5 mm wide. Leaf-blade surface scaberulous.

Inflorescence compound, a panicle. Panicle pyramidal, 20–25 cm long.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), with a barren rachilla extension, lanceolate or elliptic, laterally
compressed, 3–3.5 mm long.

Glumes. Glumes
similar, firmer than fertile lemma. Lower glume lanceolate, membranous, keeled,
1-keeled, 1 -nerved. Upper glume lanceolate, 3–3.5 mm long, membranous, keeled,
1-keeled, 1 -nerved. Upper glume surface scabrous.

Fertile lemma 2–2.5 mm long, without keel, 5 -nerved. Lemma surface glabrous.
Lemma apex entire or dentate, awned, 1 -awned. Median (principal) awn
subapical, 2–3 mm long overall. Palea apex dentate. Lodicules present. Anthers

: Australasia.

: Victoria.

Gippsland Plain, Midlands, Volcanic Plain.

Notes. Apparently endemic
in Vic. From slightly saline, seasonally wet areas on and near the volcanic
plain in the western part of the state. Flowers Nov.

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