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

[FTEA]

Iridaceae, Peter Goldblatt. Flora of Tropical East Africa. 1996

Morphology General Habit
Perennials with globose corms with membranous to fibrous tunics
Morphology Leaves
Leaves few, the lower 2-3 sheathing the base (cataphylls) and membranous, foliage leaves synanthous and 2-4, ± plicate or folded, usually with at least 2 major veins and lacking a distinct midrib, the lowermost largest, the upper smaller and becoming mostly to entirely sheathing (or leaves of the flowering shoot sheathing and elaminate, then laminate foliage leaves sometimes produced on separate shoots after flowering)
Morphology Stem
Stem terete, often with several diverging branches
Morphology Reproductive morphology Inflorescences
spike with many flowers per axis; bracts firm-textured, short, dry only apically or becoming dry and rust-coloured entirely, the outer acute, the inner bilobed, slightly shorter to slightly longer than the inner
Morphology Reproductive morphology Flowers
Flowers zygomorphic, relatively small; tepals united in a short tube, unequal, linear-spathulate, obtuse, the dorsal much exceeding the others, arched over the stamens, the lower 3 smallest and channelled
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens unilateral and arcuate
Morphology Reproductive morphology Flowers Gynoecium Style
Style arching over the stamens, undivided, stigmatic apically
Morphology Reproductive morphology Fruits
Capsule globose-trigonous (but often only 1 or 2 locules developed)
Morphology Reproductive morphology Seeds
Seeds globose to ellipsoid, glossy, with an obscurely reticulate surface, 1, rarely 2, per locule.

[FZ]

Iridaceae, P. Goldblatt. Flora Zambesiaca 12:4. 1993

Morphology General Habit
Perennial herbs with globose Corms, aerial parts dying back annually; corms with membranous to fibrous tunics.
Morphology Leaves
Leaves few, the lower 2–3 membranous and sheathing the stem base (cataphylls); foliage leaves contemporaneous with flowers, 2–4, more or less plicate or folded, usually with at least two major veins and lacking a distinct midrib, the lowermost larger than the others, the upper laminate and more or less entirely stem sheathing (or leaves of the flowering shoot elaminate and sheathing, with laminate foliage leaves then sometimes produced on separate shoots after flowering).
Morphology Stem
Stem terete, often with several diverging branches.
Morphology Reproductive morphology Inflorescences
Inflorescence spikes with many flowers per axis; floral bracts firm-textured, short, dry at the apex only or becoming dry and rust-coloured throughout, the outer bract acute, the inner bilobed, slightly shorter to slightly longer than the inner.
Morphology Reproductive morphology Flowers
Flowers zygomorphic, relatively small; tepals united in a short tube, unequal, linear-spathulate, obtuse, the upper tepal much exceeding the others and arched over the stamens, the lower 3 smallest and channelled.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens unilateral and arcuate.
Morphology Reproductive morphology Flowers Gynoecium Style
Style arching over the stamens, undivided, stigmatic at the apex.
Morphology Reproductive morphology Fruits
Capsule globose-trigonous (but often only with 2 or 1 locule developed).
Morphology Reproductive morphology Seeds
Seeds globose to ellipsoid, glossy, with an obscurely reticulate surface, 1 or rarely 2 per locule.

Native to:

Benin, Burkina, Cameroon, Central African Repu, Chad, Ethiopia, Ghana, Guinea, Guinea-Bissau, Malawi, Mali, Niger, Nigeria, Senegal, Socotra, Sudan, Tanzania, Zambia, Zaïre

Zygotritonia Mildbr. appears in other Kew resources:

First published in Bot. Jahrb. Syst. 58: 230 (1923)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • in Engl., Bot. Jahrb. 58: 230 (1923).

Flora Zambesiaca

  • Goldblatt in Bull. Mus. Natl. Hist. Nat., sér. 4, B, Adansonia 11: 201 (1989).
  • in Bot. Jahrb. Syst. 58: 230 (1923).

Flora of Tropical East Africa

  • Goldblatt in Bull. Mus. Hist. Nat. Paris, sér. 4, 11: 199-212 (1989)
  • in E.J. 58: 230 (1923)

Flora Zambesiaca
Flora Zambesiaca
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

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