
• A species of grass (Tripsacum dactyloides) tall, stout, and exceedingly productive; cultivated in the West Indies, Mexico, and the Southern States of North America as a forage grass; -- called also sesame grass.
Found on
http://thinkexist.com/dictionary/meaning/gama_grass/
Ga'ma grass` [ From
Gama , a cluster of the Maldive Islands.]
(Botany) A species of grass (
Tripsacum dactyloides ) tall, stout, and exceedingly productive; cultivated in the West Indies, Mexico, and the Southern States of North America as a forage grass; -- called also
sesame grass .
Found on
http://www.encyclo.co.uk/webster/G/6

Gama grass also known as buffalo-grass (Tripsacum dactyloides) is a tough, tall perennial grass of south-east North America cultivated for fodder.
Found on
http://www.probertencyclopaedia.com/browse/BG.HTM
No exact match found.