A TAXONOMIC STUDY OF THE GRASS GENUS GLYCERIA (MANNAGRASS) IN BRITISH-COLUMBIA

The relationships among the nine species of Glyceria occurring in Brit ish Columbia were evaluated using principal components analysis of mor phological features. The analysis resolved five distinct species and t wo groups, each consisting of a pair of similar species. independent a nalyses of these two groups indicated both consisted of different, alb eit close, species. The interpretation that quantitatively similar spe cies are distinct is corroborated by qualitative differences among the se same species. A kev to the nine species is included.