|
1. |
Spikelets covered with rufous hairs | 2 |
| Spikelets glabrous or with white hairs | 3 |
|
| 2. | Peduncles glabrous or pubescent; racemes not deflexed | *H. rufa subsp. rufa (QLD) |
| Peduncles bearded with tubercle-based hairs; racemes sometimes deflexed on maturity | *H. rufa subsp. altissima (NSW QLD) | |
| 3. | Upper raceme with 2 similar awnless sessile spikelet pairs at base | H. filipendula (NSW QLD) H. filipendula var. pilosa |
| Upper raceme with or without 1 awnless sessile spikelet pair at base | 4 |
| 4. | Plant to 60 cm tall (rarely to 1 m); spikelet with villous hairs c.1.5 mm long |
*H. hirta (NSW VIC NT SA WA QLD) H. quarrei |
| Plants to 3 m tall; spikelets with scattered hairs to 0.5 mm long |
*H. sp. |