Paspalum conjugatum, commonly known as carabao grass or hilo grass, is a tropical to subtropical perennialgrass. It is originally from the Americantropics, but has been naturalized widely in tropical Southeast Asia and Pacific Islands. It has also spread to Northern Africa and Northern and Eastern Australia. It is also known as sour paspalum, T-grass (after the shape of their panicle), or more confusingly, as "buffalo grass" or "sour grass".
Paspalum conjugatum has a creeping stoloniferoushabit. The culms are branching and slightly compressed dorsoventrally, they are usually reddish to purplish in color. The leaf sheaths are strongly flattened, usually 30 to 50 mm (1.2 to 2.0 in) long and hairy around the nodes. The leaves are smooth, around 8 to 20 cm (3.1 to 7.9 in) in length, and 5 to 12 mm (0.20 to 0.47 in) in width. They are linear to lance-like in shape, tapering to a point. The inflorescence are characteristically T-shaped, with two (rarely three) racemes.[3][5][4]
Biology
They flower approximately 4 to 5 weeks after germination and continue flowering year-round. They rarely germinate from seed. Instead they usually propagate via stolons.[5]
Ecology and uses
Paspalum conjugatum grow from sea level to around 1,700 m (5,600 ft) in altitude. They commonly grow near riparian and disturbed habitats.[5]
They are usually unpalatable to cattle, especially in the flowering stage. When grown for forage, they are usually closely cropped continually, to maintain palatability. It is suitable forage for water buffalos, however, hence the common name of "carabao grass" or "buffalo grass". They can be a serious weed among agricultural crops. They are also grown as lawn grass.[5][4]