Slender grama (Bouteloua repens (Kunth) Scribn.) is a pasture grass from the dry subtropical and tropical regions.
Bouteloua repens is a cespitose, tufted or clustered perennial grass. It is a non woody, non rhizomatous, non stoloniferous species. The stems have variable habit and can be prostrate, decumbent or erect. The culms may be 15-65 cm long and those which bear inflorescences are less than 1 m tall (Bogler, 2010; Clayton et al., 2006; Quattrocchi, 2006).The stem internodes are hollow and the nodes are swollen. Bouteloua repens may root from the lower nodes and branch from the upper nodes of the culms (Wipff, 2003). The leaves are mostly borne on the lower half of the stems. Leaf blades are narrow, 5-20 cm long, 2-10 mm wide. They can be glabrous or pubescent on their surface, leaf margins are hairy at their base or all along (Bogler, 2010; Clayton et al., 2006; Quattrocchi, 2006). The inflorescences are borne at the end of the stems. The central axis is about 4-14 cm long and bears 2-12 one-sided, 2.5 cm long racemes. These racemes are deciduous and they drop when spikelets are mature (Bogler, 2010; Gould, 1979). The 2-8 (-20) spikelets borne on the racemes are bisexual, solitary, less than 3 mm wide. Fruits are ellipsoid, oblong caryopsis, 3-4 mm long, green in colour. They are longitudinally grooved (Bogler, 2010; Clayton et al., 2006; Quattrocchi, 2006).
Slender grama is a forage species relished by ruminants (Herrera Arrieta et al., 2010).