Type of Basionym>: Fide TROPICOS and Kew Synonomy Database: South Australia
Walwhalleya jacobsiana R.D.B.Whalley & J.J.Bruhl,. Telopea 13: 85 (2011). TYPE from Australia. T:<Type of Basionym>: fide TROPICOS and Kew Synonomy Database: South Australia. Flinders Range[s], north, Oraparinna National Park, Hans Heysen Range. c. 18 km west-north-west of Oraparinna homestead. 17 Sep. 1971, E.N.S. Jackson 1880 ; holo: AD; iso: BRI, CANB, K, MEL, MO, NE, NSW, PERTH, PRE, SI, US. Illustrations: None found. Classification . Subfamily Panicoideae. Tribe: Paniceae. Subtribe Incertae Sedis. Habit, Vegetative Morphology . Perennial, caespitose. Culms erect, 10–20 cm long. Culm-internodes thin- walled, distally glabrous. Culm-nodes glabrous. Lateral branches sparse. Leaf-sheaths longer than adjacent culm internode, without keel, glabrous on surface, outer margin glabrous. Ligule an eciliate membrane, 1.5–2.8 mm long, entire or erose, truncate or obtuse. Collar glabrous. Leaf-blades involute, 4–10 cm long, 1.6–2.5 mm wide. Leaf-blade surface scaberulous, pilose, hairy adaxially. Leaf-blade margins scaberulous. Leaf-blade apex acuminate, hardened. Inflorescence . Inflorescence a panicle. Panicle open, oblong, 4–8 cm long. Primary panicle branches whorled at lower nodes, bearing 1–3 fertile spikelets on each lower branch. Panicle axis 4–8 noded, scabrous. Panicle branches pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels present, angular, 15– 20 mm long, scabrous, tip cupuliform. Fertile Spikelets . Spikelets comprising 1 basal sterile florets, 1 fertile florets, without rhachilla extension. Spikelets of 1 fertile floret with or without additional sterile florets. Spikelets two-flowered - the lower floret male or barren, the upper fertile. Spikelets elliptic, dorsally compressed, 2.5–2.9 mm long, 1.1–1.3 mm wide, falling entire.
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