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This genus is accepted, and its native range is Brazil.

[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 herb, strongly aromatic
Morphology Stem
Stems prostrate from central tap-root, rooting at nodes
Morphology Leaves
Leaves simple, toothed
Morphology Reproductive morphology Inflorescences
Inflorescence a solitary spherical capitulum, many-flowered, axillary, long-pedunculate, peduncle erect to ascending; capitulum with involucre of bracts and bracteoles
Morphology Reproductive morphology Inflorescences Bracts
Bracts long-subulate, becoming rigid, pungent; bracteoles as bracts
Morphology Reproductive morphology Flowers
Flowers sessile
Morphology Reproductive morphology Flowers Calyx
Calyx shortly infundibuliform, weakly zygomorphic, irregularly 5-10-lobed, lobes long-subulate, in fruit spreading and pungent, throat constricted and closed by dense white hairs, tube becoming inflated
Morphology Reproductive morphology Flowers Corolla
Corolla strongly 2-lipped, 5-lobed (2/3), deep purple, lobes of posterior lip rounded, anterior lip with median lobe short, directed forward, lateral lobes longer, equalling and opposing posterior lip, corolla-tube cylindric, widening slightly above
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens exserted from tube, anthers revealing conspicuous, white pollen
Morphology Reproductive morphology Flowers Gynoecium Style
Style with stylopodium not extending above ovary
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma ± unlobed, subcapitate to truncate
Morphology Reproductive morphology Flowers Disc
Disc usually 4-lobed with anterior lobe largest or with 2 large lobes, overtopping ovary
Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
Ovules 2(-3)
Morphology Reproductive morphology Fruits Infructescences
Fruiting capitulum spinose, dispersed as a unit at maturity
Morphology Reproductive morphology Fruits
Nutlets large, usually 1-2 developing per flower, slightly flattened, glossy, mucilage absent.
Note
2n=26.  One species, R. echinus (Nees & Mart.) Schauer
Ecology
In dry sandy places subject to seasonal flooding
Distribution
Northeastern Brazil.

Native to:

Brazil Northeast, Brazil Southeast

Rhaphiodon Schauer appears in other Kew resources:

First published in Flora 27: 345 (1844)

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
  • Raphiodon Benth. in A.P.de Candolle, Prodr. 12: 96 (1848), orth. var.
  • Raphiodon Epling (1936), Epling, Rep. Spec. Nov. Beih. 85: 186-188 (1936), rev.
  • Rhaphiodon Schauer, Flora 27: 345 (1844).

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