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This genus is accepted, and its native range is Brazil.
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 herbs and subshrubs
Morphology Leaves
Leaves alternate, subopposite or subverticillate, petiolate or sessile, simple
Morphology Reproductive morphology Inflorescences
Inflorescence racemose, terminal and axillary
Morphology Reproductive morphology Flowers Calyx
Calyx actinomorphic to 1-lipped, accrescent, 5-lobed
Morphology Reproductive morphology Flowers Corolla
Corolla white, 1-lipped with only anterior lip present, but facing upward due to resupination, 5-lobed with median lobe largest, tube deeply cleft between posterior (lower) lobes
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous to subequal, slightly exserted from corolla-tube, filaments straight or arched (probably varying with stage of anthesis), thecae parallel, separate at dehiscence
Morphology Reproductive morphology Flowers Pollen
Pollen operculate, psilate except for scattered, supratectal granules
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary unlobed
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma-lobes very short, equal to subequal or essentially absent
Morphology Reproductive morphology Flowers Disc
Disc absent
Morphology Reproductive morphology Fruits
Fruit drupaceous with four 1-seeded pyrenes
Morphology Reproductive morphology Seeds Endosperm
Endosperm absent.
Note
Two species
Distribution
Brazil

Native to:

Brazil Southeast, Brazil West-Central

Monochilus Fisch. & C.A.Mey. appears in other Kew resources:

First published in Index Seminum (LE, Petropolitanus) 1: 34 (1835)

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
  • Monochilus Fisch. & C.A. Mey., Index Sem. Hort. Petrop. 1: 34 (1835).

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