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This genus is accepted, and its native range is Australia.
A specimen from Kew's Herbarium

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Shrubs or subshrubs, rarely trees
Morphology Branches
Branches mostly ± round in cross-section (except distal branchlets usually quadrangular in cross-section) Branches and leaves usually ± strongly aromatic when crushed
Morphology Leaves
Leaves decussate, rarely ternate
Morphology Reproductive morphology Inflorescences
Inflorescence thyrsoid, with flowers either on leafy branches (hence appearing axillary) and part-inflorescences usually few-flowered or inflorescence terminal, leafy to bracteate, botryoidal or paniculate
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles 2
Morphology Reproductive morphology Flowers Calyx
Calyx 2-lipped
Morphology Reproductive morphology Flowers Corolla
Corolla white, pale mauve, olivaceous, red, often pinkish, mid (metallic) blue-green, occasionally yellow, distinctly 2-lipped, 5-lobed (2/3), posterior lip erect to extended forward, anterior lip usually spreading, tube expanded in throat
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, anthers 2-thecous, with connective often elongated into a basal appendage
Morphology Reproductive morphology Fruits
Fruit of 4 mericarps, enclosed by calyx lobes, often with calyx closed by infolded anterior calyx lobe.
Note
About 100 species.  Two sections have been recognized (Bentham 1870): Calyx-lobes unequal in length; corolla-tube short, broadly expanded distally; anterior lobe longer and more spreading than the erect posterior lobes; fruit enclosed by inwardly folded a
Distribution
Endemic to Australia

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Shrubs or undershrubs, non-aromatic
Morphology Branches
Branches ± round in cross-section
Morphology Leaves
Leaves decussate
Morphology Reproductive morphology Inflorescences
Inflorescence frondose-bracteate, thyrsoid, terminal, few-flowered
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles 2
Morphology Reproductive morphology Flowers Calyx
Calyx 2-lipped
Morphology Reproductive morphology Flowers Corolla
Corolla white, distinctly 2-lipped, 5-lobed (2/3), posterior lip with lobes directed outwards, anterior lip with median lobe directed outwards and forward to recurved, lateral lobes spreading, tube expanded in throat
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2 , posterior pair reduced to staminodes, inserted on anterior side of corolla-throat, anthers 2-thecous, staminodes inserted on posterior side of corolla-throat, staminodes ± club-shaped, white
Morphology Reproductive morphology Fruits
Fruit of 4 mericarps, enclosed by inward folded anterior calyx-lobe, posterior calyx-lobe usually recurved.
Note
Two species
Distribution
Endemic to Australia.

Native to:

New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia

Prostanthera Labill. appears in other Kew resources:

First published in Nov. Holl. Pl. 2: 18 (1806)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Lamiaceae Key Genus Fact Sheets

  • Chilodia R.Br., Prodr.: 507 (1810).
  • Conn, J. Adelaide Bot. Gard. 6: 207-348 (1984)
  • Cryphia R.Br., Prodr.: 508 (1810).
  • Eichlerago Carrick, J. Adelaide Bot. Gard. 1: 115 (1977).
  • Fl. New South Wales, 3: 646-662 (1992)
  • Fl. S. Australia, 3: 1209-1219 (1986)
  • Fl. Victoria, 4: 445-455 (1999).
  • Harley RM, Atkins S, Budantsev AL, Cantino PD, Conn BJ, Grayer R, Harley MM, de Kok RPJ, Krestovskaja T, Morales R, Paton AJ, Ryding O, and Upson T. 2004. Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Sp
  • Klanderia F.Muell., Linnaea 25: 426 (1853)., (1852).
  • Nuytsia 6: 351-411 (1988)
  • Prostanthera Labill., Nov. Holl. Pl. Sp. 2: 18 (1806)

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Lamiaceae Key Genus Fact Sheets
Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
http://creativecommons.org/licenses/by/3.0