Scientific name: Axonopus compressus (Swartz) Beauv.
Synonyms: Milium compressum Swartz; Paspalum platicaulon Poiret, (also misspelt platycaule); Paspalum compressum (Swartz) Raspail
Common name:Broad-leaved carpet grass
Native of tropical America.
Perennial creeping (stoloniferous) grass forming low mats, with erect seed heads up to 60 cm tall (although usually much shorter).
Widespread common weed in fine-leaf lawns, gardens and shaded areas (otherwise a useful pasture and lawn grass).
Stems and leavesPlants have hairy nodes and produce runners (stolons) which readily produce roots. Leaf sheaths are somewhat flattened, either hairy or hairless. Ligules consist of a hairy rim. The leaf blades are rather broad for a grass, linear to narrowly egg-shaped (linear ovate), 2-16 x 0.3-2 cm in size, with a blunt tip and hairy margins.
Flowers and fruit
Inflorescences usually have 2-3 (sometimes there are up to 5) slender racemes (2-10 cm long) at the top of an erect or inclined stalk up to 60 cm long. They are digitately or almost digitately (sub-digitately) arranged. Seeds are enclosed in bracts (ie. lemma and palea).
Short broad leaves with tubercular hairs (ie. with wart-like swelling at the base). Nodes are hairy unlike those of Axonopus fissifolius (narrow-leaved carpet grass). As the common names suggest, the leaves of Axonopus compressus are also usually broader than those of Axonopus fissifolius.
Auld, B.A. and Medd, R.W. (1996). Weeds: An Illustrated Botanical Guide to Weeds of Australia. Inkata Press, Sydney.
Kleinschmidt, H.E., Holland, A. and Simpson, P. (1996). Suburban Weeds. 3rd Edition. Department of Primary Industries, Brisbane.
Stanley, T.E. and Ross, E.M. (1983-1989). Flora of South-eastern Queensland. Volume 3. Department of Primary Industries, Brisbane.