Digitaria breviglumis

Digitaria breviglumis (Domin) Henrard, Monogr. Digitaria: 92 (1950)

Domin, Biblioth.
85: 298 (1915). T: Queensland,
NORTH KENNEDY DISTRICT: Dividing Range, west of Pentland, February 1910, K.Domin
[1058, 1059] (holo:
PR [photos BRI]; iso: BRI, K [photo BRI].

Digitaria sp. (Mt.
Mulligan J.R.Clarkson
5821) (Simon 1994:255; 1997:158, 2002:152; Simon et al. 2007 : 153).

Illustrations: Henrard
(1950: 93); Tothill & Hacker (1983: 194, fig 4).

rhizomatous. Flowering culms caespitose, 30–60 cm tall, 5–7-noded. Leaves:
sheaths glabrous; ligule 0.3–0.5 mm long; blades flat or involute (mostly),
2.5–7.5 cm long, 0.5–0.8 mm wide, glabrous, smooth to scabrous. Inflorescence
2–10 cm long, on a distinct central axis or consisting of a single raceme,
exerted at maturity;  racemes 1–4,
usually bearing spikelets to base, 1.5–2 cm long; central axis 0.5–1 cm long.
Pedicels 0.6–2.8 mm long. Spikelets 10–15 on a typical lowermost primary
branch, glabrous, paired, elliptic, 1.3–1.6 mm long, 0.5–0.6 mm wide. Glumes 2,
slightly unequal; lower glume 0.2–0.4 mm long, obovate, nerveless, membranous,
smooth, glabrous, truncate; upper glume 0.3–0.5 mm long, ovate, nerveless,
glabrous, truncate. Lower floret; lemma 1.3–1.6 mm long, glabrous, 5- nerved, with nerves distinct; palea
absent. Upper floret subequal to the lower floret; lemma 1.3–1.5 mm long, brown
to black, cartilaginous, very finely transversely rugose, elliptic, acute,


Additional specimens examined: Northern Territory: DARWIN & GULF: McMinns Bluff, near Pine
Creek, Jan 1991, Cowie 1476 & Dunlop (BRI, CANB, DNA, MEL, PERTH); BARKLY
TABLELEAND: Border Water hole, July 1971, Latz 1628 (BRI, CANB). Queensland: COOK DISTRICT: Mt Mulligan,
Apr 1985, Clarkson 5869 (BRI, MEL, NSW, L, PERTH, QRS); BURKE DISTRICT: 39.5
km N of Musselbrook, May 1995, Johnson MRS835 &.Thomas (BRI, K); SOUTH
KENNEDY DISTRICT: 16.5 km NNE of Yarrowmere, Apr 1992, Thompson BUC647
Mar 2000, Thompson MUT123 (BRI);
LEICHHARDT DISTRICT: Snake Range National Park, SW of Springsure, May 1995, McKosker

Distribution and
: Tropical Northern Territory
and Queensland
(Map 6). It grows in a range of mixed
Eucalyptus, Corymbia, Acacia and Melaleuca woodlands on sandstone and
skeletal soils.


Phenology: Flowering
January to August; also October.

Notes: D. breviglumis is distinguished on the basis of its
usually incurved and terete leaves and an inflorescence of one to many racemes
in which the spikelets have a unique brown to black colour of the upper floret.
The leaves can sometime be very narrow and filiform and the branches fascicled
at the nodes.

Herbrecs 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