Annual or perennial, tufted, sometimes rhizomatous
Leaf blade
linear, expanded or rolled; ligule a fringe of hairs
Inflorescence
of many 1-sided, spike-like racemes on a long central axis; racemes solitary or whorled, sometimes stiff, spreading, straight or curved like a herringbone; spikelets solitary, shortly pedicelled
Spikelet
3-10 mm long, laterally compressed, disarticulating above glumes and variously between florets; glumes very unequal, similar, shorter than spikelet, coriaceous, acute or acuminate, keeled, 1-nerved, awnless; lower glume ± half as long as upper
Florets
4-11, bisexual, sometimes uppermost reduced, decreasing in size upwards; lemma similar in texture to glumes, membranous, lanceolate or ovate-lanceolate, 3-nerved, glabrous, entire, acute, acuminate or minutely awned; callus 0; palea shorter than lemmas, acute, 2-keeled, similar in texture to lemma
Lodicules
2, minute, delicate, glabrous
Stamens
3
Ovary
glabrous; styles distinct, plumose
Caryopsis
ellipsoid to fusiform
x = 10 (7) (polyploidy)
Nomenclature:
Pogonarthria
Stapf
Stapf: 316 (1898)
Stent: 295 (1924)
Chippindall: 184 (1955)
Launert: 303 (1966)
Launert: 152 (1970)
Phillips: 267 (1974)
Clayton & Renvoize: 220 (1986)
Gibbs Russell et al.: 272 (1990)
Watson & Dallwitz: 756 (1994)
Distribution & Notes:
Global
: Species 4, Africa
Southern Africa
: Species 3, widespread, not recorded from Western Cape
References:
CHIPPINDALL, L.K.A. 1955. A guide to the identification of grasses in South Africa. In D. Meredith,
The grasses and pastures of South Africa
. Central News Agency, Cape Town
CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world.
Kew Bulletin
. Additional series 13
GIBBS RUSSELL, G.E., WATSON, L., KOEKEMOER, M., SMOOK, L., BARKER, N.P., ANDERSON, H.M. & DALLWITZ. M.J. 1990. Grasses of southern Africa.
Memoirs of the Botanical Survey of South Africa
No. 58
LAUNERT, E. 1966. A brief survey of the genus
Pogonarthria
(
Gramineae
,
Eragrosteae
,
Eragrostineae
).
Senckenbergiana Biologica
47
LAUNERT, E. 1970.
Gramineae
.
Prodromus einer Flora von Südwestafrika
160
PHILLIPS, S.M. 1974.
Flora of tropical East Africa
.
Gramineae
(Part 2)
STAPF, O. 1898-1900.
Gramineae
.
Flora capensis
7
STENT, S.M. 1924. South African
Gramineae
. Grasses of the Transvaal as represented in the National Herbarium.
Bothalia
1
WATSON, L. & DALLWITZ, M.J. 1994.
The grass genera of the world
, revised edn. CAB International, Oxon
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