| Annual; spikelets 2-3 mm long with glabrous lemmas |
*P. airoides (NSW VIC SA WA) Pentaschistis airoides |
| Perennial; spikelets 4-5 mm long with lemmas hairy on nerves | *P. pallida (SA WA) Pentaschistis pallida, P. thunbergii auct. |
Key to Pentameris derived from Gardner 1952; Linder 1990, as Pentaschistis
Taxonomic name: