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This genus is accepted, and its native range is Ethiopia to KwaZulu-Natal and SW. Pacific, Tropical & Subtropical America.
Pisonia (Nyctaginaceae)

[FZ]

Nyctaginaceae, B. L. Stannard. Flora Zambesiaca 9:1. 1988

Morphology General Habit
Scandent or erect shrubs or trees, unarmed or with axillary spines.
Morphology Leaves
Leaves opposite, alternate or verticillate, petiolate or sessile, simple, entire.
Morphology Reproductive morphology Inflorescences
Inflorescences paniculate cymes, axillary or terminal, dense or lax, subsessile or pedunculate.
Morphology Reproductive morphology Flowers
Flowers small, dioecious, rarely monoecious or hermaphrodite, male and female flowers sometimes of different shape; bracts 2–4, not involucrate.
Morphology Reproductive morphology Flowers Perianth
Perianth infundibuliform, campanulate, urceolate or tubular, 5–10 lobed or toothed; lobes erect, spreading or reflexed.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens variable in number usually 5–10 mostly exserted, rudimentary in female flowers; filaments connate below.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary sessile or stipitate, elongate, rudimentary in male flowers; style filiform, included or exserted; stigma lobed-capitate, multifid.
Morphology Reproductive morphology Fruits
Fruit enclosed in hardened, elongated, oblong or clavate, smooth or 4–5-angled perianth base (anthocarp); angles sometimes furnished with longitudinal rows of viscid stipitate glands.

[FTEA]

Nyctaginaceae, Christopher Whitehouse. Flora of Tropical East Africa. 1996

Morphology General Habit
Trees, shrubs or rarely lianas, sometimes with axillary spines
Morphology Leaves
Leaves opposite or alternate, sometimes clustered towards the ends of branches, entire, sessile or petiolate
Morphology Reproductive morphology Inflorescences
Inflorescences terminal or axillary cymes, clusters or panicles
Morphology Reproductive morphology Flowers
Flowers unisexual, usually on separate plants, or bisexual; perianth campanulate, urceolate or funnel-shaped, 5(–10)-lobed, often falling early; bracts 2–3 or absent, not forming an involucre
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–20, exserted; filaments united into a ring
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary elongate-ovoid, sessile; style longer than ovary; stigma capitate, lobed or fimbriate
Morphology Reproductive morphology Fruits
Anthocarp oblong, linear or clavate, often 5(–6)-ribbed or sulcate, smooth, tuberculate or with sticky stipitate glands; embryo straight.

Native to:

Aldabra, Andaman Is., Argentina Northeast, Argentina Northwest, Arizona, Bahamas, Belize, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cambodia, Cayman Is., Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Ethiopia, Fiji, Florida, Guatemala, Guyana, Hainan, Haiti, Honduras, India, Jamaica, Jawa, Kenya, KwaZulu-Natal, Laos, Leeward Is., Lesser Sunda Is., Madagascar, Malaya, Mauritius, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mozambique, Myanmar, New Caledonia, New Guinea, New South Wales, Nicaragua, Nicobar Is., Northern Territory, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Queensland, Saudi Arabia, Southwest Caribbean, Sri Lanka, Sulawesi, Sumatera, Taiwan, Tanzania, Texas, Thailand, Tonga, Uganda, Venezuela, Venezuelan Antilles, Vietnam, Western Australia, Windward Is., Yemen

Introduced into:

Bangladesh, Benin, Cape Verde, Ghana, Ivory Coast, Nigeria, Sudan, Trinidad-Tobago

Pisonia Plum. ex L. appears in other Kew resources:

First published in Sp. Pl.: 1026 (1753)

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

  • —F.T.A. 6, 1: 8.

Flora Zambesiaca

  • Sp. Pl. 1: 1026 (1753)
  • in Gen. Pl. ed. 5: 451 (1754).

Flora of Tropical East Africa

  • Bittrich & U. Kühn in Kubitzki et al., Fam. Gen. Vasc. Pl. 2: 484 (1993)
  • L., Gen. Pl., ed. 5: 451 (1754)
  • Sp. Pl.: 1026 (1753)
  • Stemm. in Blumea 12: 275–284 (1964)

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

Neotropikey
Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
http://creativecommons.org/licenses/by/3.0