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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, non-aromatic or ± aromatic when crushed
Morphology Branches
Branches mostly ± round in cross-section (except distal branchlets usually quadrangular in cross-section), leaves decussate, or in whorls of 3-4
Morphology Reproductive morphology Inflorescences
Inflorescence thyrsoid, with flowers on leafy branches (hence appearing axillary) and part-inflorescences cymose, usually few-flowered
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles 2
Morphology Reproductive morphology Flowers Calyx
Calyx often appearing 2-lipped, 5-lobed (sometimes unequally)
Morphology Reproductive morphology Flowers Corolla
Corolla pale to dark mauve, often pinkish, occasionally white, 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, posterior pair usually 2-thecous, but one theca greatly reduced and sometimes absent, anterior stamens with anthers 1-thecous, other theca sterile and often terminated by trichomes, all anther-connectives lacking a basal appendage, elongated be
Morphology Reproductive morphology Fruits
Fruit of 4 mericarps, enclosed or not enclosed by calyx-lobes.
Distribution
About 50 species, all endemic to Australia.

Native to:

New South Wales, Northern Territory, Queensland, Western Australia

Hemigenia R.Br. appears in other Kew resources:

First published in Prodr. Fl. Nov. Holland.: 502 (1810)

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

  • Atelandra Lindl., Sketch Veg. Swan R.: 40 (1839).
  • Colobandra Bartl. in J.G.C.Lehmann, Pl. Preiss. 1: 357 (1845).
  • 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
  • Hemigenia R.Br., Prodr. 1: 502 (1810).

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