1. Flowering culm less than 25 cm tall A. grevillensis (QLD)
Flowering culm more than 40 cm tall 2

2. Culms up to 9-noded, covered by leaf sheaths; leaf blades to 2 mm wide A. montana (QLD)
Culms 3-5-noded, internodes exposed; leaf blades to 7 mm wide 3

3. Fertile lemma 3-awned A. setosa (NT QLD)
Fertile lemma 1-awned A. nepalensis (NSW NT WA QLD)

Key to Arundinella derived from Simon 1982b

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith