Lachnagrostis drummondiana

Lachnagrostis drummondiana
(Steud.)S.W.L.Jacobs. Telopea 9:445(2001).

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

Basionym and/or
Replacement Name:
Steud., Syn. Pl. Glumac.  1: 120 (1854).

Type of Basionym or
Protologue Information
: HT: J. Drummond IV, 371, Australia: Western Australia: fl. Cygnorum (P; IT: K
(photo, SI), L, LE). L lists their specimen as HT.

Recent synonyms:
Agrostis drummondiana (Steud.) Vickery.

Key references
(books and floras):
[1952] C.A.Gardner, Flora of Western
1 Gramineae (154), [2002] D.Sharp &
B.K.Simon, AusGrass, Grasses of Australia, [2009] A.Wilson
(ed.). Flora of Australia,
Vol 44A. Poaceae 2 (179).

Habit. Annual.
Culms erect, 40–60 cm tall, 4 -noded. Leaf-sheaths scaberulous, glabrous on
surface. Ligule an eciliate membrane, 3–7 mm long, obtuse or acute. Leaf-blades
linear, flat or involute or convolute, 3–15 cm long, 1–3 mm wide. Leaf-blade
surface scaberulous.

Inflorescence compound, a panicle. Panicle lanceolate, loose, 15–25 cm long.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), with a barren rachilla extension, elliptic, laterally compressed,
5–6 mm long.

Glumes. Glumes
similar, firmer than fertile lemma, shiny. Lower glume lanceolate, membranous,
keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 4.5–5.5 mm long,
membranous, keeled, 1-keeled, 1 -nerved.

Fertile lemma 3 mm long, without keel, 5 -nerved. Lemma surface indumented.
Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal, 7–10 mm
long overall, with a twisted column. Palea apex dentate. Lodicules present.
Anthers 3.

: Australasia.

: Western Australia.

Western Australia: Drummond.

Notes. Endemic. Restricted
to W.A.

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