Inflorescence a large compound terminal panicle of many racemes *S.microstachyum (QLD)
Inflorescence composed of simple axillary and terminal racemes 2

Racemes concealed within spatheoles; ligules at least 2 mm long S. mitchelliana (WA)
Racemes projected beyond spatheoles; ligules to 1mm long 3

Sessile spikelets dorsally compressed, 4-8 times as long as wide 4
Sessile spikelets ±laterally compressed, 7-13 times as long as wide 7

4. Lower glume of sessile spikelet not winged  S. pseudeulalia (NT WA QLD)

Lower glume of sessile spikelet winged, at least above middle 5

5. Rachis internode with a dense oblique beard of long hairs S. fragile (NSW NT WA QLD)
S. obliqueberbe
Rachis internode glabrous or diffusely hairy  6

6. Spikelets 3.5-4.5 mm long, 0.6-0.7 mm wide S. perplexum (NT QLD)
Spikelets 5-8 mm long, 1.3-1.6 mm wide S. pachyarthron (NT WA QLD)




Rachis internodes and pedicels very
slender with a dense ±horizontal band of long hairs above middle
S. crinizonatum (NT WA QLD)
Rachis internodes and pedicels ±stout,
with hairs diffuse or marginal and not in a horizontal band
Sessile spikelet similar to pedicel
in appearance, with a glabrous upper lemma
S. occultum (NT QLD)
Sessile spikelet very different to
pedicel in appearance, with a ciliolate upper lemma
S. dolosum (QLD)
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith