Pisonia Plum. ex L.

First published in Sp. Pl.: 1026 (1753)
This genus is accepted
The native range of this genus is Ethiopia to KwaZulu-Natal and SW. Pacific, Tropical & Subtropical America.

Descriptions

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.
[FZ]

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.
[FTEA]

Sources

  • 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 Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. 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