Paspalidium globoideum

Paspalidium globoideum (Domin)
D.K.Hughes. Bull. Misc. Inform. 317 (1923).

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

Basionym and/or
Replacement Name:
 Panicum
globoideum
Domin, Repert. Spec. Nov. Regni Veg. 10: 119 (1911).

Type of Basionym or
Protologue Information
: LT: Wuth. s.n., Queensland: Springsure (K).
LT designated by ?; cited by Webster, Sida 16: 443 (1995).

Key references
(books and floras):
[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
(324).

Illustrations:
[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
Wales
, 4th edn (324).

Habit.
Perennial. Rhizomes present, short. Culms erect, 25–80 cm tall, 3–10 -noded.
Mid-culm internodes hollow, glabrous. Mid-culm nodes glabrous. Lateral branches
simple or sparsely branched. Leaf-sheaths smooth or scaberulous. Ligule a
fringed membrane, a ciliolate membrane, 0.75 mm long, truncate. Leaf-blades
6–25 cm long, 3–6 mm wide. Leaf-blade surface scaberulous or scabrous.

Inflorescence.
Inflorescence compound, a panicle of racemes. Racemes 5–10, appressed,
flexuous, 1.5–6 cm long, 3–5.5 mm wide, bearing 5–20 fertile spikelets on each.
Central inflorescence axis 7–20 cm long.

Spikelets.
Spikelets pedicelled. 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, orbicular, terete
or dorsally compressed, 3–4.5 mm long.

Glumes.
Glumes thinner than fertile lemma. Lower glume ovate, membranous, without
keels, 5–9 -nerved. Lower glume surface glabrous. Lower glume apex muticous or
mucronate. Upper glume orbicular, 3–4 mm long, membranous, without keels, 9–13
-nerved. Florets. Basal sterile florets 1, male or barren, with palea.
Lemma of lower sterile floret 100 % of length of spikelet, membranous, 9–11
-nerved.

Fertile lemma 3–4.5 mm
long, without keel. Lemma apex mucronate.

Continental
Distribution
: Australasia.

Australian
Distribution
: Queensland, New South Wales.

Queensland:
Burke, Burnett, Darling Downs, Leichhardt, Maranoa, Port Curtis, Warrego, North
Kennedy, South Kennedy, Moreton. New South Wales: North-Western Slopes,
North-Western Plains.

Notes. In
tropical and subtropical wet sclerophyll forests, Brigalow forests, tropical
and subtropical sub-humid woodlands, and semi-arid shrub woodlands. Flowers
Feb.-June.

 

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