|Upper glume 5-9 mm long; lowest node of inflorescence with few branches; panicle diffuse and partially drooping
||P. australis (NSW VIC TAS NT SA WA QLD)
|Upper glume 4-6 mm long; lowest node of inflorescence with many branches; panicle erect and compact
||P. karka (NT SA WA QLD)
P. vallatoria auct.
Key to Phragmites derived from Clayton 1967; Veldkamp 1992; Ward 2010