Gironniera Gaudich.

First published in Voy. Bonite, Bot. 3: t. 85 (1844)
This genus is accepted
The native range of this genus is Tropical & Subtropical Asia.

Descriptions

Timothy M. A. Utteridge and Laura V. S. Jennings (2022). Trees of New Guinea. Kew Publishing. Royal Botanic Gardens, Kew

Morphology General Habit
Trees and shrubs to 40 m tall, without buttresses
Morphology General Indumentum
Indumentum of simple and/or capitate-glandular hairs, with young growth sparsely to densely yellow to brown hairy
Morphology Leaves Stipules
Stipules extrapetiolar, free but intertwined, enclosing the terminal bud, set at an oblique angle, falling leaving an annular scar
Morphology Leaves
Leaves margin serrate to subentire, venation pinnate with numerous lateral veins
Morphology Reproductive morphology Inflorescences
Inflorescences axillary or ramiflorous, usually unisexual, paniculate, racemose, thyrsoid or capitate, bracts often persistent in female inflorescences
Morphology Reproductive morphology Flowers
Flowers unisexual and plants probably functionally dioecious, 4–5-merous, male flowers globose, female flowers ovoid; perianth lobes imbricate in bud, equal in male flowers, unequal in female flowers; stamens as many as perianth lobes, inflexed, staminodes absent; ovary laterally compressed, pistillode present, stigmatic arms much longer than ovary
Morphology Reproductive morphology Fruits
Fruit drupaceous, elliptic-lenticular, exocarp thin, adnate to the hard endocarp.
Distribution
Gironniera in New Guinea is found in the understorey of primary and secondary lowland forests up to 1300 m. A genus of 6–10 species, distributed from Sri Lanka and Indo-China to New Guinea, Australia and the Pacific. Four species in New Guinea (none endemic), one in the Solomon Islands.
Recognition
Gironniera species are often fertile when young, so there are numerous juvenile specimens in herbaria which can be difficult to identify to species. The genus can be recognised by the stipule set at an angle and encircling the twig, leaving an annular scar, leaves with pinnate venation and numerous pairs of lateral veins, the long stigmatic arms (up to 1.5 cm) and the laterally compressed, lens-shaped fruit.
[TONG]

Sources

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Trees of New Guinea

    • Trees of New Guinea
    • http://creativecommons.org/licenses/by-nc-sa/3.0