Lachnagrostis drummondiana
(Steud.)S.W.L.Jacobs. Telopea 9:445(2001).
Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.
Basionym and/or
Replacement Name: Dichelachne
drummondiana 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
Australia 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.
Inflorescence compound, a panicle. Panicle lanceolate, loose, 15–25 cm long.
Spikelets.
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.
Florets.
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.
Continental
Distribution: Australasia.
Australian
Distribution: Western Australia.
Western Australia: Drummond.
Notes. Endemic. Restricted
to W.A.
