POLYGONACEAE: Buckwheat Family

KEY TO POLYGONELLA SPECIES

1. Leaf blade (3)8-20(29) mm across (See GROUP F) ................................ P. macrophylla

1. Leaf blade (0.3)0.5-3.6(5) mm across ................................................................................. 2

2.Ocrea ciliate .................................................................... P. fimbriata

2. Ocreae not ciliate .......................................................................................... 3

3. Top of sheath around stem at leafy nodes oblique to acute .............................. P. americana

3. Top of sheath around stem at leafy nodes with a narrow long-tapered tip.................................. P. polygama

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