Arundinella nepalensis

Arundinella nepalensis Trin. Gram. Pan. 62 (1826).

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

Type of Basionym or Protologue Information: Nepal:, Wallich s.n. in Herb. Lindley (HT: LE; IT: K).

Key references (books and floras): 1878] G.Bentham, Flora Australiensis 7 (545), [1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (224), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New South Wales (135).

Illustrations: [1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (223, Pl. 66), [1983] J.C.Tothill & J.B.Hacker, Grasses of Southern Queensland (114), [1984] N.T.Burbidge. rev. S.W.L.Jacobs, Australian Grasses  (65), [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn (135).

Derivation: L. -ense, denoting origin. From Nepal.

Habit. Perennial. Rhizomes present, short. Culms erect, 180 cm tall, 1.5–5 mm diam., 2–5 -noded. Mid-culm nodes pubescent. Lateral branches simple or sparsely branched. Leaves cauline. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane, 1 mm long, truncate. Leaf-blades straight, flat, 8–40 cm long, 3–10 mm wide. Leaf-blade surface glabrous or indumented.

Inflorescence. Inflorescence compound, a panicle. Panicle lanceolate or pyramidal, 5–40 cm long, contracted about primary branches.

Spikelets. 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, 4–7 mm long.

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

Fertile lemma 2–3 mm long, without keel, 3–5 -nerved. Lemma apex dentate or lobed, awned, 1 -awned. Median (principal) awn from a sinus, 4–6 mm long overall, with a twisted column. Palea 2 -nerved. Palea apex dentate. Lodicules present. Anthers 3. Grain 1.6 mm long.

Continental Distribution: Africa, Temperate Asia, Tropical Asia, and Australasia.

Australian Distribution: Western Australia, Northern Territory, Queensland, New South Wales.

Western Australia: Gardner, Fitzgerald, Hall, Dampier. Northern Territory: Darwin & Gulf, Victoria River, Barkly Tableland. Queensland: Burke, Burnett, Cook, Darling Downs, Gregory North, Leichhardt, Maranoa, Mitchell, Moreton, North Kennedy, Port Curtis, South Kennedy, Warrego, Wide Bay. New South Wales: North Coast, Central Coast, Northern Tablelands, North-Western Slopes, Central-Western Slopes, North-Western Plains.

Notes. Tropical Africa, Madagascar, India to China and tropical and subtropical Australia. Savanna woodlands of tropics and subtropics, particularly in wetter areas. Flowers year round.


Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith