Corymbia stockeri subsp. stockeri sensu APC is regarded by DN as synonymous with C. lamprophylla. However, C. stockeri subsp. peninsularis is recognised by DN and keyed out in this key as C. stockeri.
C. henryi sensu APC is regarded in this key to be C. maculata, and not worthy of species rank.) C. variegata as recognised by DN is here treated as C. citriodora (following APC). Note that both DN and APC recognise three species of spotted gums, but differ in their name concepts. Although some keys claim to separate C. henryi from C. maculata, they actually key out C. henryi from C. variegata (the latter erroneously identified as C. maculata), due to C. variegata previously having been included in C. maculata and geographically surrounding the ‘C. henryi’ populations.
C. watsoniana sensu APC is regarded by DN to comprise two taxa, C. watsoniana and C. catenaria (the latter not recognised by APC)
C. greeniana sensu APC is regarded by DN to comprise two taxa, C. greeniana and C. byrnesii (the latter not recognised by APC)
C. terminalis sensu APC is regarded by DN to comprise two taxa, C. terminalis and C. opaca (the latter not recognised by APC)
C. dichromophloia sensu APC is regarded by DN to comprise three taxa, C. dichromophloia, C. capricornia and C. drysdalensis (the latter two not recognised by APC)
The following hybrid taxa, which are listed on APC, are not included in the key as they are very difficult to incorporate due to their intermediacy between other (parental) taxa and the variability between individual plants: C. ×chillagoensis; C. ×opacula; C.×pedimontana; C. paractia
C. punkapitiensis is included in the APC, but is not recognised by DN. See Nicolle D (2014). The scantily collected Corymbia punkapitiensis (Myrtaceae) is not distinct from the widespread arid-zone species C. aparrerinja. Nuytsia 24: 263-267.
Two phrase names (C. sp. Pentland Hills (P.I.Forster+ PIF16644) and C. sp. Springsure (M.I.Brooker 9786)) included in APC, are not yet included in the key because DN has not seen the two specimens and there is no available information as to how they differ from other taxa
Nicolle, D. (2016). Key to species of Corymbia in Australia.
KeyBase (2018). Flowering plants of Australia: Species of Corymbia. https://keybase.rbg.vic.gov.au/keys/show/6076 [Seen: 21-10-2018].