Tapeinosperma Hook.f.

First published in G.Bentham & J.D.Hooker, Gen. Pl. 2: 647 (1876)
This genus is accepted
The native range of this genus is E. Malesia to SW. Pacific.

Descriptions

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

Distribution
A genus of approximately 60 species from Borneo to the Pacific, with a centre of diversity in Fiji, New Caledonia and Vanuatu; five species in New Guinea.
Morphology General Habit
Trees or rarely shrubs
Morphology Leaves
Leaves pseudo-verticillate, entire, punctate, subsessile or petiolate, but always with swollen petioles (appearing pulvinate)
Morphology Reproductive morphology Inflorescences
Inflorescences axillary or terminal, racemose or compound racemose with the flowers in corymbs
Morphology Reproductive morphology Flowers
Flowers 5-merous, bisexual; calyx lobes imbricate in bud, nearly free or united up to their length, punctate or not; corolla campanulate, the lobes dextrorsely contorted in bud, sparsely punctate, punctate or lacking punctations; stamens usually 5 per flower, occasionally 10 per flower (T. magnifica in New Guinea), filaments basally connate and adnate to the corolla tube, anthers free, oblong-ovoid, dorsifixed near the base, opening by longitudinal slits starting as subapical pores; ovary globose or ovoid, style thick, longer than the ovary, the stigma truncate, capitate or somewhat discoid; ovules few (usually 6–12), uniseriate. Fruits large, mostly depressed-globose to oblongoid, the exocarp thick and juicy but not spongy, endocarp crusty
Morphology Reproductive morphology Seeds
Seed one.
Ecology
The genus is found in primary rain forest from sea level to 925 m in New Guinea.
Recognition
Tapeinosperma can be recognised by the leaves pseudo-verticillate and crowded at the apex of the stems or branches, the large leaves (up to 1 m in T. pachycaulum B.C.Stone & Whitmore in New Britain and New Ireland), robust petioles appearing pulvinate, the bisexual flowers, and the stamens with very short filaments adnate to the corolla tube.
[TONG]

Sources

  • Herbarium Catalogue Specimens

  • Interactive Key to Seed Plants of Malesia and Indo-China

    • The Malesian Key Group (2010) Interactive Key to Seed Plants of Malesia and Indo-China (Version 2.0, 28 Jul 2010) The Nationaal Herbarium Nederland Leiden and The Royal Botanic Gardens Kew
  • 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