Stenocarpus R.Br.

First published in Trans. Linn. Soc. London 10: 201 (1810), nom. cons.
This genus is accepted
The native range of this genus is New Guinea to Australia, New Caledonia.

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 about 20 species, the majority of which are endemic to New Caledonia; the distribution also includes Australia; two species in New Guinea: Stenocarpus moorei F.Muell. and S. sinuatus (Loudon) Endl.
Morphology General Habit
Trees and shrubs to 11 m
Morphology Leaves
Leaves spiral, petiolate, heterophyllous: young leaves simple or compound, irregularly lobed to deeply divided, mature leaves simple, elliptic, entire or shallowly toothed. Inflorescence terminal or in upper leaf axils, umbelliform or racemose but with ultimate units umbellate, bracts caducous or absent
Morphology Reproductive morphology Flowers
Flowers zygomorphic, bisexual, pedicellate, white, green to yellow (S. moorei) or red (S. sinuatus); perianth tube splitting on lower side to partly release style, lobes separating at anthesis, becoming recurved; stamens sessile within the concave tepal ends, connective not prolonged; disk glands united into a shallow cup or much reduced; ovary stipitate, style longer than the tepals, pollen presenter dilated, oblique, with a central stigma
Morphology Reproductive morphology Fruits
Fruit a dehiscent, coriaceous follicle, narrowly ellipsoid or oblong
Morphology Reproductive morphology Seeds
Seeds numerous, in 2 rows, winged.
Ecology
The two species of Stenocarpus in New Guinea have somewhat different ecological requirements: Stenocarpus moorei F.Muell. is found in grassland, savannah forest, riverine areas and beach forest in northern Indonesia New Guinea around Jayapura, and Morobe and Western Provinces in Papua New Guinea from sea level to 180 m; S. sinuatus Endl. has been collected from montane forest in Central and Western Provinces of Papua New Guinea at 1000–1500 m.
[TONG]

Sources

  • Herbarium Catalogue Specimens

  • 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