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This genus is accepted, and its native range is Temp. E. Asia.
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
Perennial, shortly rhizomatous herb, ?aromatic
Morphology Leaves
Leaves deeply toothed
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, of lax 3(-1)-flowered, bracteolate cymes, shortly pedunculate below
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles present
Morphology Reproductive morphology Flowers
Flowers small, long-pedicellate
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate-infundibuliform, posterior lobes broadly acuminate, anterior lobes longer, calyx-tube annulate shortly below throat, tube slightly gibbous at base in fruit
Morphology Reproductive morphology Flowers Corolla
Corolla broadly campanulate, white, obscurely 2-lipped, 5-lobed, corolla-tube slightly constricted and annulate within, near base
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, divergent, anterior pair longer and slightly exserted from corolla-tube, posterior pair included, thecae ± parallel to slightly divergent, separate, with small connective
Morphology Reproductive morphology Flowers Gynoecium Style
Style and stigma-lobes short
Morphology Reproductive morphology Fruits
Nutlets 4, broadly obovoid, smooth.
Note
A single species, P. reptans Maxim.
Ecology
Woodland near streams
Distribution
Japan.

Native to:

Japan, Nansei-shoto

Perillula Maxim. appears in other Kew resources:

First published in Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 20: 463 (1875)

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

  • 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
  • Perillula Maxim., Bull. Acad. Imp. Sci. St Petersbourg, ser. 3, 20: 463 (1875).

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