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This genus is accepted, and its native range is Tropical & S. Africa to Tropical & Subtropical Asia.
Rotheca serrata

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Shrubs or subshrubs
Morphology Leaves
Leaves simple, opposite or in whorls of 3–4, entire or often toothed
Morphology Reproductive morphology Inflorescences
Flowers in terminal and/or axillary cymes or in almost spike-like inflorescences
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, 4–6-lobed
Morphology Reproductive morphology Flowers Corolla
Corolla ± zygomorphic; tube basally saccate or cylindrical; lobes ± unequal, often forming a ± 2-lipped limb, the upper lip larger and curved, limb asymmetrically globose in bud
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted in the corolla-tube, long-exserted; anthers basifixed
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary imperfectly 4-celled, each cell with 1 lateral ovule
Morphology Reproductive morphology Flowers Gynoecium Style
Style terminal; stigma 2-fid with ± unequal lobes, exserted
Morphology Reproductive morphology Fruits
Drupes (2–)4-lobed; mesocarp ± fleshy; endocarp bony, separating into 4 stones or 2 pairs of stones.
Distribution
Some 35 species in Africa and Asia
Note
This genus was resurrected by Steane & Mabberley in Novon 8: 204–206 (1998) and has been accepted by other authors, such as Fernandes & Verdcourt in Kew Bull. 55: 147–154 (2000).

[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, subshrubs and perennial herbs (rarely lianas or small trees), ill-scented
Morphology Leaves
Leaves opposite or whorled, usually sessile or short-petiolate, simple, entire or toothed
Morphology Reproductive morphology Inflorescences
Inflorescence a terminal thyrse (usually lax, paniculiform) or axillary cyme, occasionally reduced to solitary, axillary flowers
Morphology Reproductive morphology Flowers Calyx
Calyx actinomorphic or nearly so, not accrescent, 5-lobed or truncate
Morphology Reproductive morphology Flowers Corolla
Corolla blue, purple or white (rarely yellow), subactinomorphic to 1-lipped and then with only anterior lip present, 5-lobed, lobes subequal or anterior lobe largest and often concave and different in colour, tube straight or curved, often gibbous, coroll
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous to subequal, long-exserted, filaments arched or straight, anther-thecae parallel, separate at dehiscence
Morphology Reproductive morphology Flowers Pollen
Pollen with supratectal spinules
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary unlobed in flower but becoming lobed during fruit development
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma-lobes equal or frequently unequal
Morphology Reproductive morphology Flowers Disc
Disc poorly to well developed
Morphology Reproductive morphology Fruits
Fruit drupaceous, 4-lobed, the lobes sometimes elongating greatly during development, eventually separating into fleshy 1-seeded mericarps
Morphology Reproductive morphology Seeds Endosperm
Endosperm absent.
Note
2n = 48, 52, 184.  Fifty to 60 species. Although Rotheca has been included within Clerodendrum by most authors, there is strong molecular evidence that its inclusion renders Clerodendrum polyphyletic (Steane et al. 1997, 1999).  The two genera also differ
Distribution
Mostly of sub-Saharan Africa but a few in Madagascar, the Indian Ocean islands, southern Asia, and Indonesia.  Introduced to West Tropical Africa

[FZ]

Flora Zambesiaca. Vol 8, Pt 7. Avicenniaceae, R. Fernandes. Nesogenaceae, M.A. Diniz. Verbenaceae, R. Fernandes. Lamiaceae, R. Fernandes. 2005.

Morphology General
Perennial herbs or suffrutices with woody rootstocks, sometimes geoxylic, shrubs, sometimes scandent, or small trees
Morphology Leaves
Leaves simple, opposite-decussate or 3–4-whorled, usually petiolate; lamina entire, undulate, dentate or crenate, distinctly acrid when crushed Leaves simple, opposite-decussate or 3–4-whorled, usually petiolate; lamina entire, undulate, dentate or crenate, distinctly acrid when crushed. Leaf lamina usually broadest above the middle, usually discolorous and whitish or yellowish tomentose beneath; branches often densely hairy or tomentose towards the apices; short lateral flowering branches often present
Morphology Reproductive morphology Inflorescences
Inflorescences terminal or axillary, with flowers in lax or ± dense cymes, the cymes racemosely, corymbosely or paniculately arranged Inflorescences terminal or axillary, with flowers in lax or ± dense cymes, the cymes racemosely, corymbosely or paniculately arranged.
Morphology Reproductive morphology Flowers
Flowers non-resupinate Flowers non-resupinate.
Morphology Reproductive morphology Flowers Calyx
Calyx usually red or purple, campanulate to subspherical, ± deeply (4)5(6)-lobed, usually persistent and slightly accrescent in fruit; the lobes acute to rounded Calyx usually red or purple, campanulate to subspherical, ± deeply (4)5(6)-lobed, usually persistent and slightly accrescent in fruit; the lobes acute to rounded.
Morphology Reproductive morphology Flowers Corolla
Corolla predominantly blue to whitish, asymmetrical in bud, distinctly zygomorphic when open; tube relatively short and broad, anteriorly gibbose; limb 5-lobed with 2 posterior lobes subequalling 2 lateral lobes and 1-anterior lobe larger than the others, concave or spoon-like and often coloured differently Corolla predominantly blue to whitish, asymmetrical in bud, distinctly zygomorphic when open; tube relatively short and broad, anteriorly gibbose; limb 5-lobed with 2 posterior lobes subequalling 2 lateral lobes and 1-anterior lobe larger than the others, concave or spoon-like and often coloured differently.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4(5?) inserted at the base of corolla-tube, parallel, long exserted, arched; anthers usually basifixed, thecae parallel, not confluent Stamens 4(5?) inserted at the base of corolla-tube, parallel, long exserted, arched; anthers usually basifixed, thecae parallel, not confluent.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary glabrous or hairy, 2-carpellate, each carpel incompletely divided into 2 locules; placentas not furcate; ovules 1 per locule Ovary glabrous or hairy, 2-carpellate, each carpel incompletely divided into 2 locules; placentas not furcate; ovules 1 per locule.
Morphology Reproductive morphology Flowers Gynoecium Style
Style terminal, slender, ± equalling the filaments; stigma 2-fid, the lobes usually unequal
Morphology Reproductive morphology Fruits
Fruit a 3–4-lobed drupe or drupaceous schizocarp, obovoid or globose; mesocarp ± fleshy; endocarp bony or crustaceous; each lobe containing a 1-seeded pyrene; seed without albumen. Fruit a 3–4-lobed drupe or drupaceous schizocarp, obovoid or globose; mesocarp ± fleshy; endocarp bony or crustaceous; each lobe containing a 1-seeded pyrene; seed without albumen.
Distribution
A genus of 26–30 species, widespread throughout sub-Saharan Africa, with 1 species in tropical Asia eastwards to the Moluccas, and one species introduced and naturalized in Madagascar and the Indian Ocean islands.
Morphology General Habit
Perennial herbs or suffrutices with woody rootstocks, sometimes geoxylic, shrubs, sometimes scandent, or small trees.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style terminal, slender, ± equalling the filaments; stigma 2-fid, the lobes usually unequal.

Native to:

Angola, Assam, Bangladesh, Benin, Borneo, Botswana, Burkina, Burundi, Cabinda, Cambodia, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, Chad, China South-Central, China Southeast, Congo, Djibouti, East Himalaya, Eritrea, Ethiopia, Free State, Gabon, Ghana, Guinea, India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Laos, Lesotho, Liberia, Madagascar, Malawi, Malaya, Mozambique, Myanmar, Namibia, Nepal, Nigeria, Northern Provinces, Pakistan, Rwanda, Sierra Leone, Somalia, Sri Lanka, Sudan, Sumatera, Swaziland, Tanzania, Thailand, Tibet, Uganda, Vietnam, West Himalaya, Zambia, Zaïre, Zimbabwe

Introduced into:

Seychelles, Trinidad-Tobago

Rotheca Raf. appears in other Kew resources:

First published in Fl. Tellur. 4: 69 (1838)

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

Flora Zambesiaca

  • Fl. Tellur. 4: 69 (1838).
  • Harley et al. in Kadereit (ed.), Fam. Gen. Vasc. Pl. (Kubitzki, ed. in chief) VII: 198 (2004).
  • Kadereit (ed.), Fam. Gen. Vasc. Pl. (Kubitzki, ed. in chief) VII : 198 (2004).
  • Kew Bull. 55 : 147–154 (2000).
  • Novon 8 : 204–206 (1998).
  • R. Fernandes & Verdcourt in Kew Bull. 55: 147–154 (2000).
  • Steane & Mabberley in Novon 8: 204–206 (1998).

Flora of Somalia

  • Flora Somalia, (2000) Author: by M. Thulin [updated by M. Thulin 2008]

Lamiaceae Key Genus Fact Sheets

  • Clerodendrum L. subg. Clerodendrum sect. Konocalyx Verdc. (1992).
  • Clerodendrum L. subg. Cyclonema (Hochst.) Guerke (1895).
  • Cyclonema Hochst., Flora 25: 225 (1842).
  • Cyrtostemma Kunze, Bot. Zeitung (Berlin) 1: 272 (1843).
  • 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
  • Kalaharia Baill., Hist. Pl. 11: 110 (1892)., (1891).
  • Rotheca Raf., Fl. Tell. 4: 69 (1838)
  • Spironema Hochst., Flora 25: 226 (1842), nom. illeg.
  • Steane and Mabberley, Novon 8: 204 - 206 (1998).

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

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