Subspecies, varieties, forms and cultivars of plants belonging to the Hoya australis group

• Hoya australis R.Br. ex J.Traill: (subsp. australis) has climbing stems to 10 m tall, leaves to 15 cm long glabrous to hairy, margin weakly revolute. Distribution: Australia, Samoa, Vanuatu.
• Hoya australis subs. nathalieae Kloppenb. & Siar
• Hoya australis subs. oramicola P.I.Forst. & Liddle: has hairy leaves less than 5 cm long, margin strongly revolute. Distribution: Australia (Northern territories).
• Hoya australis subs. rupicola (K.D.Hill) P.I.Forst. & Liddle: has very succulent hairy leaves margins not revolute. Stems shorter not climbing. Distribution: Australia (Western Australia and Northern territories)
• Hoya australis subs. sana (F.M.Bailey) K.D.Hill: has tomentous leaves less than 5 long, margins strongly revolute. Distribution: Australia (Queensland).
• Hoya australis subs. tenuipes (K.D.Hill) P.I.Forst. & Liddle: has leathery glabrous (or scarcely hairy) leaves, margin slightly revolute. Distribution: Indonesia, Papua New Guinea, Australia, Fiji, Solomon Islands, Tonga.