| Leaf sheaths densely covered with tubercle-based hairs; spikelets to 5 mm long; annual | A. hispidus (NSW QLD) A. ciliaris |
| Leaf sheaths lightly covered with tubercle-based hairs; spikelets c. 7 mm long; perennial | A. castratus (QLD) |
Key to Arthraxon derived from Vickery 1961
Taxonomic name: