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This genus is accepted, and its native range is Suriname to Brazil, Tropical Africa, Madagascar.
A specimen from Kew's Herbarium

[FSOM]

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

Morphology General Habit
Shrubs, sometimes climbing
Morphology Leaves
Leaves opposite, entire; stipules membranous
Morphology Reproductive morphology Flowers
Flowers 5-merous, heterostylous, in axillary or terminal cymes; bracts small, sepal-like
Morphology Reproductive morphology Flowers Calyx
Calyx deeply lobed
Morphology Reproductive morphology Flowers Corolla
Corolla funnel-shaped, usually white; lobes imbricate in bud
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted in lower part of corolla-tube, included or often exserted in long-staminate flowers
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 2-celled, with 2 ovules in each cell; style with twice dichotomously branched stigma
Morphology Reproductive morphology Fruits
Fruit a bilobed flattened capsule, loculicidally dehiscent, 4-valved
Morphology Reproductive morphology Seeds
Seeds flattened, appressed pubescent.
Distribution
Ten species in tropical Africa and one in northern South America.

[FZ]

Loganiaceae, A. J. M. Leeuwenberg. Flora Zambesiaca 7:1. 1983

Morphology General Habit
Shrubs, undershrubs, or sometimes lianas, with simple hairs or nearly glabrous.
Morphology Stem
Stems much branched; twigs usually thin.
Morphology Leaves
Leaves opposite, those of a pair equal or subequal, shortly petiolate; lamina mostly papyraceous when dry, ovate to very narrowly elliptic, variable in shape and size, on lateral branches often smaller, entire or obscurely sinuate–dentate, pinnately veined; veins conspicuous.
Morphology Leaves Stipules
Stipules membranaceous, usually triangular, entire, those of a pair united, or all fused into a short ocrea.
Morphology Reproductive morphology Inflorescences
Inflorescence axillary or terminal, usually on short lateral branches, mostly obliquely and incompletely dichasial, i–many–flowered.
Morphology Reproductive morphology Inflorescences Bracts
Bracts mostly small and sepal–like.
Morphology Reproductive morphology Flowers
Flowers 5–merous, dimorphic.
Morphology Reproductive morphology Flowers Calyx
Sepals green, connate at the base up to half their length, equal or unequal, ovate to very narrowly elliptic, obtuse to subulate at the apex, entire or sometimes obscurely sinuate–dentate.
Morphology Reproductive morphology Flowers Corolla
Corolla white, sometimes pale yellow, orange, or red, yellow at the base or not, infundibuliform, 2·5–9 x as long as the calyx; tube about 3–5 x as long as the lobes; lobes imbricate in the bud, spreading, orbicular or nearly so, rounded, entire or sometimes obscurely sinuate–dentate.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens included or in long–staminate flowers often exserted, equal or unequal; filaments pubescent or sometimes glabrous (M. microphylla, M. brunonis), inserted at one–quarter to one–third from the base of the corolla tube; anthers orbicular or oblong; cells 2, discrete, divergent at the base, dehiscent throughout by a longitudinal slit.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary superior, ovoid, usually with 2 impressed lines, 2–celled, with 2 ovules in each cell; style simple, shorter or longer than the stamens, when longer slightly exserted, deciduous, minutely pubescent with glandular hairs; stigma twice dichotomously branched, lobes narrow, pubescent (hairs glandular).
Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
Ovules attached to the base of the septum.
Morphology Reproductive morphology Fruits
Fruit capsular, obcordate, bilobed, or occasionally ellipsoid, flattened, with an impressed line in the middle, loculicidal, 4–valved; valves hinging on the septum; cells with 1–2 seeds.
Morphology Reproductive morphology Seeds
Seeds plano–convex (not so if fruit ellipsoid), obliquely ovate to orbicular, pale brown, dull and densely appressed–pilose (African species).

[FTEA]

Loganiaceae, E. A. Bruce and J. Lewis. Flora of Tropical East Africa. 1960

Morphology General Habit
Small much-branched shrubs
Morphology Leaves
Leaves opposite, ± elliptic, entire
Morphology Reproductive morphology Inflorescences
Inflorescences of few-flowered usually axillary cymes
Morphology Reproductive morphology Flowers
Flowers heterostylous
Morphology Reproductive morphology Flowers Calyx
Calyx regularly 5-lobed; lobes longer than the tube
Morphology Reproductive morphology Flowers Corolla
Corolla funnel-shaped, white, with or without yellow patches; lobes 5, shorter than the tube
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5, alternate with the corolla lobes, inserted low in the corolla-tube
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary superior, 2-locular with 2 large erect basal ovules in each loculus; styles 4 or fewer and then variously divided to support 4 stigmas
Morphology Reproductive morphology Fruits
Capsule flattened at right-angles to the septum, forming an almost plane fruit broader than long with an emarginate apex, dehiscing loculicidally; seeds 1–2 in each loculus.

Native to:

Angola, Brazil North, Brazil Southeast, Brazil West-Central, Burundi, Cabinda, Cameroon, Central African Repu, Congo, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mozambique, Nigeria, Senegal, Sierra Leone, Somalia, Sudan, Suriname, Tanzania, Zambia, Zaïre, Zimbabwe

Mostuea Didr. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Tchouto (Mbatchou), P. [746], Cameroon K000011836

First published in Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn 1853: 86 (1853)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Flora of West Tropical Africa

  • Leeuwenberg in Meded. Landb. Wageningen 61, 4: 1—31 (1961).
  • —F.T.A. 4, 1: 504

Flora Zambesiaca

  • Leeuwenberg, Meded. Landouwb. Wag. 61 (1): 1 (1961).
  • Vidensk. Medd. Kjoeb. 1853: 86 (1854)

Flora of Somalia

  • Flora Somalia, Vol 3, (2006) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • in Kjoeb. Vidensk. Meddel. 1853: 86 (1853)

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

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens

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