1 "Margin of leaf sheaths often undulate-crisped; inflorescence 3.5–7 cm long, panicle branches not whorled; flowers white or sometimes pale blue, tepals 4–6 mm long" "Pollia crispata" 1 "Margin of leaf sheaths flat and entire; inflorescence 10–35 cm long, panicle branches in whorls; flowers blue, pale mauve or purple, tepals 3–4 mm long" "Pollia macrophylla"