Walwhalleya jacobsiana R,D.B.Whalley & J.J.Bruhl. Telopea 13 (1–2): 85 (2011).
Classification. (GPWG 2001) : Subfamily Panicoideae. Paniceae.
Perennial. Culms erect, 10–20 cm tall. Mid-culm internodes hollow, glabrous.
Mid-culm nodes glabrous. Lateral branches sparsely branched. Leaf-sheaths
glabrous on surface. Ligule an eciliate membrane, 1.5–2.8 mm long, entire or
erose, truncate or obtuse. Leaf-blades involute, 4–10 cm long, 1.6–2.5 mm wide.
Leaf-blade surface scaberulous, indumented.
Panicle oblong, 4–8 cm long.
Spikelets pedicelled. Fertile spikelets comprising 1 basal sterile florets, 1
fertile floret(s), without rachilla extension, elliptic, dorsally compressed,
2.5–2.9 mm long. Rhachilla internodes elongated between glumes.
similar to fertile lemma in texture, dull. Lower glume ovate, membranous, without
keels, 5–7 -nerved. Upper glume elliptic, 2.2–2.6 mm long, membranous,
1-keeled, 7–9 -nerved. Florets. Basal sterile florets 1, barren, without
significant palea. Lemma of lower sterile floret 1 % of length of spikelet,
chartaceous, 7–9 -nerved.
Fertile lemma 1.7–2.1
mm long, without keel.
Distribution: South Australia.