Conn, B.J. (17 December 1997), Four rare and/or threatened new species of Prostanthera Section Prostanthera (Labiatae) from New South Wales. Telopea 7(3): 231-234, Fig. 1 [tax. nov.]

• Type: Holotype: New South Wales: Central Coast: Pole Ford, 'Forest of Tranquillity' (Askania Park), W of Ourimbah, B.J.Conn 4140 & H.M.Conn, 25 Oct 1996 (NSW 402642); isotypes: AD, BRI, CANB, MEL).

taxonomic synonym: Prostanthera sp. G [n/a] taxonomic synonym: Prostanthera sp. Strickland State Forest (J.H.Maiden s.n., 07/1915) [n/a] misapplication: Prostanthera incisa var. pubescens F.Muell. ex Benth. legitimate by Althofer, G.W. (June 1978), Cradle of Incense: The Story of Australian Prostanthera: 68, 176 common name: Tranquillity Mintbush [n/a]

• Etymology: The specific epithet is an indeclinable noun in apposition that refers to the collecting locality (Askania Park, now known as 'Forest of Tranquillity') of the type material.

National Herbarium of New South Wales (2009), PlantNET Flora of New South Wales Online: - [secondary reference]

common name: Tranquillity Mintbush [n/a]

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - APC [secondary reference]

taxonomic synonym: Prostanthera sp. G [n/a] taxonomic synonym: Prostanthera sp. Strickland State Forest (J.H.Maiden s.n., 07/1915) [n/a] taxonomic synonym: Prostanthera sp. 6 (Strickland State Forest ; J.H.Maiden s.n.) [n/a] misapplication: Prostanthera incisa var. pubescens F.Muell. ex Benth. legitimate by Althofer, G.W. (June 1978), Cradle of Incense: The Story of Australian Prostanthera: 68, 176

• APC Dist.: NSW

---