Arundinella montana

Arundinella montana S. T. Blake. Univ. Queensland Dept. Biol. Pap 1(18): 16 (1941).

Classification. (GPWG 2001) : Subfamily Panicoideae. Arundinelleae.

Type of Basionym or
Protologue Information
: Moreton Dist., Mt. Ngungun, in rock crevices,
300–700 ft one of the abundant plants on the upper part of the mountain, Blake

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

Derivation: L. mons,
mountain; -ana, indicating location. Growing on mountains.

Perennial. Rhizomes present, short. Culms 30–90 cm tall, 5–13 -noded. Lateral
branches simple or sparsely branched. Leaf-sheaths glabrous on surface or
hairy. Ligule a fringed membrane, a ciliolate membrane, 0.5–0.7 mm long,
truncate. Leaf-blades straight, involute, 5–19 cm long, 1.5 mm wide.

Inflorescence compound, a panicle. Panicle linear or lanceolate, 8–23 cm long,
1–3 cm wide, contracted about primary branches.

Spikelets pedicelled, 2 in the cluster. Fertile spikelets 2-flowered, the lower
floret barren (rarely male), the upper fertile, comprising 1 basal sterile
florets, comprising 1 fertile floret(s), without rachilla extension,
lanceolate, laterally compressed, 4–5.2 mm long.

Glumes. Glumes
dissimilar, thinner than fertile lemma, shiny. Lower glume ovate, membranous,
keeled, 1-keeled, 3–7 -nerved. Lower glume apex awned. Upper glume lanceolate,
membranous, keeled, 1-keeled, 5–7 -nerved. Florets. Basal sterile
florets 1, male, with palea. Lemma of lower sterile floret 100 % of length of
spikelet, membranous, 1-keeled, 5 -nerved.

Fertile lemma 2.75–3
mm long, without keel, 5 -nerved. Lemma apex entire or dentate or lobed, awned,
1 -awned. Median (principal) awn from a sinus, 3.8–6 mm long overall, with a
twisted column. Column 1–2 mm long. Palea 2 -nerved. Lodicules present. Anthers
3. Grain 1.4 mm long.

: Australasia.

: Queensland.

Darling Downs, Moreton.

Notes. Known
only from the trachyte rocks of the Glass House Mountains, Mt Barney, Mt Ernest
and Mt Maroon, SE Qld.

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