Sehima nervosum

Sehima nervosum (Rottler) Stapf. Fl.
Trop. Afr.
9: 36 (1917).

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

Basionym and/or
Replacement Name:
Rottler ex Roem. & Schult., Syst. Veg. 2: 812 (1817).

Type of Basionym or
Protologue Information
: Philippine Islands: Luzon: July 1918, M. Ramos
Bur. of Sci. 32946
(HT: ?; IT: US-1263212).

Key references
(books and floras):
[1810]. R.Brown, Prodromus (205 as Ischaemum
201 as Andropogon striatus), [1878] G.Bentham, Flora
7 (522 as Ischaemum laxum), [1952] C.A.Gardner, Flora
of Western Australia
1 Gramineae (301), [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 (366).

[1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (303,
Pl. 88), [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of
New South Wales
, 4th edn (366).

Perennial. Culms erect, 30–100 cm tall, wiry. Mid-culm nodes glabrous or
bearded. Ligule a fringe of hairs, 1–2 mm long. Leaf-blades 5–40 cm long, 2–7
mm wide.

Inflorescence solid, a rame. Rhachis fragile at the nodes.

Spikelets sessile, 1 in the cluster. Companion spikelets pedicelled, 1 in the
cluster. Companion spikelets developed, containing empty lemmas or male, 6–10
mm long. Companion spikelet glumes muticous. 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,
laterally compressed, 6–10 mm long.

Glumes dissimilar, firmer than fertile lemma. Lower glume elliptic,
cartilaginous or coriaceous, much thinner above, keeled, 2-keeled, wingless or
winged on keel, winged narrowly, 6 -nerved. Lower glume surface glabrous. Lower
glume apex mucronate. Upper glume elliptic, 6 mm long, membranous or
chartaceous, keeled, 1-keeled, winged on keel, 3–5 -nerved. Upper glume surface
scabrous. Upper glume apex awned. Florets. Basal sterile florets 1,
male, with palea. Lemma of lower sterile floret hyaline, 2 -nerved.

Fertile lemma 5 mm
long, without keel, 3 -nerved. Lemma apex lobed, awned, 1 -awned. Median
(principal) awn from a sinus, 20–40 mm long overall, with a twisted column.
Palea without keels.

: Africa, Temperate Asia, Tropical Asia, and Australasia.

: Western Australia, Northern Territory, Queensland, New South

Western Australia:
Gardner, Fitzgerald, Hall, Dampier. Northern Territory: Darwin &
Gulf, Victoria River, Barkly Tableland. Queensland: Burke, Burnett,
Cook, Darling Downs, Gregory North, Leichhardt, Mitchell, Moreton, North
Kennedy, Port Curtis, South Kennedy. New South Wales: North-Western

Notes. Common
in savanna country througout subtropical and tropical Australia. Extends
through New Guinea and SE Asia to India and tropical Africa. Poor quality
fodder. Flowers all year.


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