Scrotochloa tararaensis

Scrotochloa tararaensis (P. Jansen)
E.J.Judziewicz. Phytologia 56: 300 (1984).

Classification. (GPWG 2001) : Subfamily Pharoideae.

Basionym and/or
Replacement Name:
Jansen, Reinwardtia 2(2): 304 (1953).

Type of Basionym or
Protologue Information
: IT: L.J. Brass 8587, Jan 1937, Papua New
Guinea: New Guinea I., Western Div. (US-1723653).

Key references
(books and floras):
[1969] E.E.Henty, Manual Grasses New Guinea
(120 as Scrotochloa), [2002] D.Sharp & B.K.Simon, AusGrass,
Grasses of Australia
, [2009] A.Wilson (ed.). Flora of Australia, Vol
44A. Poaceae 2 (7).

Perennial. Rhizomes present, short. Culms erect, 40–45 cm tall. Mid-culm
internodes hollow or solid, thin-walled. Ligule a fringed membrane, a ciliolate
membrane. Leaf-blades linear, 10–40 cm long, 4–8 mm wide. Leaf-blade surface

Inflorescence compound, a panicle. Panicle ovate, 4–10 cm long. Racemes 2–7,
spreading, straight, 4–8 cm long. Central inflorescence axis 3–5 cm long.

Spikelets pedicelled, 1 in the cluster. Male spikelets pedicelled, 1 in a
cluster. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), without
rachilla extension, obovate, laterally compressed, 3–4 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume ovate, scarious, without
keels, 1 -nerved. Lower glume surface indumented. Upper glume ovate, 4 mm long,
scarious, without keels, 1 -nerved. Upper glume surface indumented. Florets.
Fertile florets female.

Fertile lemma 4 mm
long, without keel. Lemma surface indumented. Lodicules absent or vestigial.
Anthers 6.

: Tropical Asia and Australasia.

: Queensland.


Notes. Known
only from 1 collection in northern Qld. Also rare in New Guinea. Flowers
recorded for 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