Pheidochloa gracilis

Pheidochloa gracilis S. T. Blake. Proc.
Roy. Soc. Queensland
56: 20 (1944).

Classification. (GPWG 2001) : Subfamily
Micrairoideae. Tribe Nardeae.

Type of Basionym or
Protologue Information
: IT: S.T. Blake 13732, 8 Apr 1938, Australia:
Queensland: Cook Dist. (L, US-1868027).

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

Habit. Annual.
Culms erect, stature slender to delicate, 6–50 cm tall, 3–5 -noded. Mid-culm
nodes glabrous. Lateral branches simple or branched. Ligule a fringe of hairs,
0.1–0.2 mm long. Leaf-blades filiform, convolute, 0.3–4 cm long, 0.2–0.4 mm
wide. Leaf-blade surface papillose.

Inflorescence solid, a panicle. Panicle elliptic, 1.5–3.2 cm long.

Spikelets pedicelled. Fertile spikelets 2-flowered, both fertile, comprising 2
fertile floret(s), without rachilla extension, lanceolate, laterally
compressed, 5–13 mm long. Rhachilla internodes elongated between glumes.

Glumes dissimilar, thinner than fertile lemma. Lower glume ovate, membranous,
without keels, 7 -nerved. Lower glume surface glabrous. Upper glume lanceolate,
5.1–11 mm long, membranous, without keels, 7 -nerved. Upper glume surface
smooth, glabrous.

Fertile lemma 2.5–5 mm long, without keel, 7 -nerved. Lemma surface indumented.
Lemma apex entire, awned, 1 -awned. Median (principal) awn 20–45 mm long
overall. Palea 2 -nerved. Palea apex entire, muticous. Lodicules present.
Anthers 2. Grain 2 mm long.

: Australasia.

: Northern Territory, Queensland.

Northern Territory:
Darwin & Gulf. Queensland: Cook, North Kennedy.

N.T. and Qld. In damp sandy heaths, herbfields, eucalypt or Melaleuca
woodlands. Flowers Apr.-Sept.


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