Punctelia subflava is a species of foliose lichen in the family Parmeliaceae that occurs in Australia.

[2] John Elix and Jen Johnston transferred Parmelia subflava to the genus Punctelia in 1988.

[3] Several years earlier, David Galloway and Elix had proposed Parmelia subflava to be synonymous with Punctelia rudecta.

[5] Identical in secondary chemicals, and similar in appearance to Punctelia rudecta, Punctelia subflava can be distinguished from that species by the form of the pseudocyphellae (sparse and point-like), the thickness of the thallus (thin and fragile), and the morphology of the isidia (always dorsiventral).

[6] Punctelia subflava is listed as "Extinct" on the schedules of the Tasmanian Threatened Species Protection Act 1995.