Urochloa oligotricha*

Urochloa oligotricha* (Figari & De
Not.) Henrard. Blumea 4: 502 (1941).

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

Basionym and/or
Replacement Name:
Fig. & De Not., Mem. Reale Accad. Sci. Torino, ser. 2,
14: 333 (1854).

Type of Basionym or
Protologue Information
: T: Figari s.n., Nubia.

Recent synonyms:
U. bolbodes.

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

Habit. Perennial. Rhizomes absent. Stolons absent. Culms 30–100 cm tall.
Mid-culm internodes glabrous. Mid-culm nodes glabrous or pubescent. Ligule a
fringed membrane or a fringe of hairs. Leaf-blades 6–45 cm long, 5–20 mm wide.
Leaf-blade surface indumented.

Inflorescence compound, a panicle of racemes. Racemes 6–20, 2–12 cm long, 0.7–1
mm wide. Central inflorescence axis 4–10 cm long.

Spikelets sessile and pedicelled or sessile. 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,
lanceolate, dorsally compressed, 3.5–5 mm long. Rhachilla internodes brief up
to lowest fertile floret.

Glumes dissimilar, thinner than fertile lemma. Lower glume lanceolate,
herbaceous, without keels, 5–7 -nerved. Lower glume surface glabrous or
indumented. Upper glume lanceolate, 3.9–4.8 mm long, membranous, without keels,
7 -nerved. Upper glume surface glabrous or indumented. Upper glume apex
muticous. Florets. Basal sterile florets 1, male, with palea. Lemma of
lower sterile floret 100 % of length of spikelet, membranous, 5 -nerved.

Fertile lemma 2–2.8 mm
long, without keel. Lemma apex mucronate or awned. Median (principal) awn
0.3–0.6 mm long overall.

: Africa and Australasia.

: Queensland.

Queensland: Cook.

Introduced. In tropical and subtropical sub-humid woodlands. Flowers Jan.-Aug.

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