Apiaceae

Mackinlaya F.Muell.

First published in Fragm. 4: 119 (1864)
This genus is accepted
The native range of this genus is 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 five species, throughout Malesia to Queensland and the Solomon Islands; with three species in New Guinea, two of which are endemic: Mackinlaya celebica (Harms) Philipson from the Philippines to New Guinea, and M. radiata Philipson which is very little collected and M. schlechteri (Harms) Philipson known from very distinct populations along the Central Range.
Morphology General Habit
Shrubs to small trees 6 m, often poorly branched or unbranched, unarmed, glabrous
Morphology Leaves
Leaves variable, either unifoliolate or digitately compound with the central leaflets digitately compound or digitately lobed, leaflets entire to coarsely serrate; petiole with a sheath encircling the stem
Morphology Reproductive morphology Inflorescences
Inflorescences terminal, compound umbellate or terminating in cymes
Morphology Reproductive morphology Flowers
Flowers male or hermaphrodite, 5–6-merous; pedicels articulated below the flower; calyx lobes 5 or 6, triangular or lanceolate; petals 5 or 6, narrowed into a distinct claw, and inflexed at the apex; stamens 5 or 6, anthers subglobose; disk prominent; ovary inferior, 2-celled, 1 ovule per locule; styles 2, subulate, free, recurved in fruit
Morphology Reproductive morphology Fruits
Fruit drupaceous, strongly compressed, 2-seeded (or 1 aborted), with a longitudinal furrow between the seeds; exocarp leathery, endocarp cartilaginous
Morphology Reproductive morphology Seeds
Seeds with smooth endosperm.
Ecology
Found in a variety of habitats including primary rain forest and montane forest as well as secondary growth, from sea level to c. 2500 m.
Recognition
The genus can be recognised by the sheathing petiole bases encircling the stem, leaves with a variable number of leaflets but often digitately compound with 1–5 leaflets with the terminal leaflet itself digitately lobed or compound, the flowers with clawed petals with reflexed tips, and the strongly compressed fruits.
[TONG]

Sources

  • 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 2023. 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 2023. 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