Synonyms for Buffalo grass:

n.

buffalo grass (noun)
St. Augustine Grass, Buchloe Dactyloides, Stenotaphrum Secundatum.
plant (noun)
St. Augustine Grass, Buchloe Dactyloides, Stenotaphrum Secundatum.

Other synonyms:

St. Augustine grass
St. Augustine Grass.
Stenotaphrum secundatum
Stenotaphrum Secundatum.