Zuloagaea bulbosa*

Zuloagaea bulbosa* (Kunth) Bess, Syst. Bot. 31(4): 666 (2006)

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

Common name: Bulbous Panic, Texas Grass

Basionym and/or
Replacement Name:
H. B. & K., Nov. Gen. Sp. 1: 99 (1815).

Type of Basionym or
Protologue Information
: HT: F.W.H.A. von Humboldt & A.J.A. Bonpland
, Sep, Mexico: Guanajuato:
Santa Rosa
(P-Bonpl.; IT: US-2907467 (fragm. & photo ex P)).

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
[2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New South

[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
, 4th edn (314 as Panicum).

Perennial. Rhizomes absent or present. Stolons absent. Culms erect, 30–150 cm
tall, 3–8 -noded. Mid-culm internodes glabrous. Mid-culm nodes glabrous.
Lateral branches sparsely branched. Leaf-sheaths smooth or antrorsely scabrous.
Leaf-sheath auricles absent. Ligule a fringed membrane, a ciliolate membrane,
0.5–1 mm long. Leaf-blades linear, 20–60 cm long, 3–15 mm wide. Leaf-blade
surface smooth or scabrous.

Inflorescence compound, a panicle. Panicle ovate, 12–50 cm long, evenly
furnished or with spikelets clustered towards branch tips.

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, elliptic or oblong,
dorsally compressed, 3–4.2 mm long. Rhachilla internodes brief up to lowest
fertile floret.

Glumes. Glumes
thinner than fertile lemma. Lower glume ovate, membranous, without keels, 3
-nerved. Lower glume apex muticous. Upper glume elliptic or ovate, 3–3.5 mm
long, membranous, without keels, 5 -nerved. Florets. Basal sterile
florets 1, male or barren, with palea. Lemma of lower sterile floret 100 % of
length of spikelet, membranous, 5 -nerved, muticous or mucronate.

Fertile lemma 2.8–4 mm
long, without keel. Lemma apex muticous. Anthers 3.

: Australasia, North America, and South

: New South Wales.

South Wales
: North Coast, Central
Coast, Central-Western

The obscurely transverse rugose or wrinkled surface of the upper floret is very
unusual for Panicum.

Introduced; Native to
semi-arid regions of SW United States where it
is occasionally cultivated as a forage species. In temperate wet sclerophyll
forests, dry sclerophyll forests, temperate sub-humid woodlands, and semi-arid
shrub woodlands. Flowers Nov.-Apr.

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