Ectrosia

1. Lemmas hairy E. gulliveri (QLD)
E. gulliveri var. squarrulosa
Lemmas not hairy 2


2. Spikelets 14-30mm long (excluding awns);
lowest lemma
4-7mm long
3
Spikelets 2-11(-14)mm long (excluding
awns); lowest lemma 1.5-4mm long
5


3. Spikelets 25-30mm long E. blakei (NT QLD)
Spikelets 14-20mm long 4


4. Spikelets appressed to inflorescence
branches
E. danesii (NT WA QLD)
E. appressa
Spikelets laxly dispersed E. laxa (NT QLD)


5. Lemmas distinctly scabrid all over E. scabrida (NT WA QLD)
Lemmas smooth or slightly scabrous 6


6. Spikelets 2-4mm wide 7
Spikelets 0.5-1.5mm wide 8


7. Lemmas narrowly acuminate to aristate E. anomala (QLD)
Lemmas with a distinct awn at least 2mm
long
E. confusa (NT QLD)


8. Florets 8-25, all similar, mainly bisexual;
awns 0.5-1.5mm long
E. lasioclada (NT WA QLD)
E. eragrostoides, E. subaristata,
Ectrosiopsis lasioclada
Florets 2-9, lower bisexual or male, upper
sterile; awns up to 12mm long
9


9. Lowest lemma 3-3.5mm long 10
Lowest lemma 1.5-3mm long 11


10. Perennial E. schultzii var. schultzii (NT WA QLD)
Annual E. schultzii var. annua (NT QLD)


11. Spikelets 2-3mm long; inflorescence
open
E. agrostoides (NT WA QLD)
Spikelets 3-7mm long; inflorescence
┬▒congested
E. leporina (NT WA QLD)
E. leporina var. longiglumis, E.
leporina
var. micrantha, E. leporina var. pauciflora, E. leporina
var. spadicea

Key to Ectrosia derived from Hubbard 1936; Nightingale & Weiller 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