1. Lemma of lowest floret with a short apical hook-like bristle *C. pilosa (NT)
Lemma of lowest floret awned 2

2. Spikelet blunt at apex 3
Spikelet narrowed to pointed at apex 9

3. Lowest floret lemma hairy on lower margin 4
Lowest floret lemma glabrous on margin 6

4. Awns much longer than spikelets *C. virgata (NSW VIC NT SA WA QLD)
Awns shorter to slightly longer than spikelets 5

5. Inflorescence spikes to 6 cm long; marginal
hairs of lemma projecting prominently
*C. ciliata (QLD)
Inflorescence spikes more than 8 cm long;
marginal hairs of lemma adpressed to margins
*C. gayana (NSW VIC NT SA WA QLD)



Spikelet 3-flowered  7
Spikelet 2-flowered 8

Inflorescence with more than 5 racemes *C. inflata (NT SA WA QLD)
C. barbata auct.
Inflorescence with up to 4 racemes C. sp. (Edgbaston, R.J.Fensham 5694) (QLD)


Lemma of lowest floret not overlapping
second floret, which is clearly visible
 C. truncata (NSW VIC NT SA WA QLD)
Lemma of lowest floret overlapping second
floret, hiding it from view
 C. ventricosa (NSW VIC SA QLD)
9. Lemma 1-awned 10
Lemma 3-awned 12

10. Tufted annual; spikes 4-7cm long C. pectinata (NSW NT SA WA QLD)
Stoloniferous or decumbent perennial;
spikes 8-20cm long

11. Spikelet-bearing axes 3-6, rigid C. divaricata var. cynodontoides (QLD)
C. cynodontoides
Spikelet bearing axes 5-8, flaccid C. divaricata var. divaricata (NSW NT QLD)

12. Lemma awns subequal, the central slightly longer C. lobata (NT WA QLD)
Lemma awns very unequal C. pumilio (NT WA QLD)
C. ruderalis

Key to Chloris derived from Lazarides 1972; Anderson 1974; Nightingale et al 2005

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