Cynodon dactylon

Cynodon dactylon, commonly known as Bermuda grass, also known as couch grass in Australia and New Zealand, is a grass found worldwide. It is native to Europe, Africa, Australia and much of Asia. It has been introduced to the Americas. Contrary to its common name, it is not native to Bermuda and is in fact an abundant invasive species there. In Bermuda it has been known as "crab grass" (also a name for Digitaria sanguinalis). Other names are Dhoob, dūrvā grass, ethana grass, dubo, dog grass, dog's tooth grass, Bahama grass, crab grass, devil's grass, couch grass, Indian doab, arugampul, grama, wiregrass and scutch grass.

Hybrid species of Cynodon dactylon have been produced known as Cynodon dactylon x transvaalensis. These are Interspecific hybrids from cross-pollination of plants of different species. Vegetatively propagated Bermuda/couch hybrid varieties are developed by a selection of superior plants from established seeded or vegetatively propagated plantings. The branded varieties are primarily known as triploids, which have 3 sets of chromosomes. This includes hybrid couch or bermuda grasses, like TifTuf Hybrid Bermuda.