|
|
1. Glumes 3-lobed | A. debilis (WA) |
| Glumes entire | 2 | |
| 2. Lemma with central lobe much more strongly developed |
A. setaceus (WA) Diplopogon setaceus |
|
| Lemma with equal or subequal lobes | 3 | |
| 3. Callus 1.5-3 mm long | 4 | |
| Callus less than 1.5 mm long | 5 | |
| 4. Lemmas 11-12 mm long | A. avenaceus (WA) | |
| Lemmas c.16 mm long | A. turbinatus (WA) | |
| 5. Lemma does not extend into bristles | A. amphipogonoides (WA) | |
| Lemma lobes extended into bristles | 6 | |
| 6. Glumes tapering into fine points | 7 | |
| Glumes obtuse or narrowed into short acute lobes | 8 | |
| 7. Spikelets 7-18 mm long including awns; leaves soft | A. laguroides var. laguroides (WA) | |
| Spikelets c.25 mm long including awns; leaves stiff | A. laguroides var. havelii(WA) | |
| 8. Lemmas uniformly hairy below lobes | 9 | |
| Lemmas with two vertical bands of hairs in lower part | 10 | |
| 9. Bristles ciliate to tips | A. sericeus (NT WA QLD) | |
| Bristles scabrous | A. caricinus var. scaber (QLD) | |
| 10.Bristles ciliate to tips | A. caricinus var. caricinus (NSW VIC NT SA WA QLD) | |
| Bristles scabrous | A. strictus (NSW WA QLD) | |
Key to Amphipogon derived from Vickery 1950, Macfarlane 2005
Taxonomic name: