Eragrostis walteri  

Arundinoideae. –This subfamily has presented problems to grass taxonomists for many years (Clayton & Renvoize 1986; Conert 1987; Ellis 1987; Hsiao et al. 1998; Kellogg & Campbell 1987; Renvoize 1981, Watson et al. 1985) as it has in the past being regarded primarily as repository for many genera that could not be readily accommodated in any of the other subfamilies (Renvoize 1981; Conert 1987).