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This species is accepted, and its native range is W. New Guinea.

[KBu]

Coode, M.J.E. (2019). Elaeocarpus for Flora Malesiana: five new taxa. Kew Bulletin 74: 36. https://doi.org/10.1007/s12225-019-9824-3

Ecology
Primary rain-forest.
Morphology General Habit
Trees 12 – 15 m high with ‘Terminalia branching’
Morphology Leaves
Leaves tightly crowded at or loosely grouped towards twig tips; petioles 2.5 – 4 (– 6) cm long, 1.5 – 1.8 mm thick, persistently hairy like the twigs, not verrucose when mature, rounded or flat in apical third above, distinct from leaf-base, somewhat swollen and without pegs at apex, somewhat swollen or geniculate at base; blades chartaceous, obovate to obovate-panduriform, 2.1 – 2.6 × as long as wide, 17 – 22 (– 26) × 8 – 10 cm, not acuminate, obtuse to broadly obtuse at apex (90 – 120°), cuneate or tapering towards a narrowly rounded or a broadly cuneate base, dull above when dry (but reported glossy in life), with some indumentum beneath with ± dense, short to medium, straight to wavy spreading hairs (young leaves reported ‘brown-velvety’), not or scarcely verrucose when mature, with 11 – 13 pairs of main veins at 50 – 60° to midrib and curved forwards, fine venation network obscure above, midrib strongly prominent beneath and reported ‘brown-hairy’, main laterals prominent beneath and breaking up 3/43/4 – 7/87/8 inside margin and with visible vein connections (not quite a looping intramarginal vein), with domatia absent beneath, without minute dark dots beneath, margins weakly serrate, clearly less serrated in lower half, teeth 7 – 17 mm apart in apical half
Morphology Leaves Stipules
Stipules persistent, narrow-triangular, thick at base tapering to apex, densely hairy like twigs on back, apex and sometimes margins dark and glabrous, 2 – 3 mm long, entire
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 23 – 32 (23 from 4-merous bud, 32 from 6-merous), inserted in a ± single ring between disk and ovary; filaments c. 1 mm long, not tapering, glabrous; anthers minutely fairly densely hairy, c. 2.5 mm long, outer tooth clearly much longer than inner, inner without awn, beak or setae, outer with slender awn 0.3 – 0.5 mm long, not more obviously hairy than the rest of the anther, without setae at tip
Morphology Reproductive morphology Flowers Calyx
Sepals falling earlier than stamens, sparsely hairy outside, densely short-hairy inside, not verrucose outside at anthesis, with low keel inside at base at least, fading towards tip
Morphology Reproductive morphology Flowers Corolla
Petals (in almost open bud) thin and clearly translucent, obovate, rounded at apex, 17 – 20 apical divisions unequal in length and grouped into pairs or 3s, divisions narrow, linear or narrow-triangular, c. 1 mm long at this stage, acute at tip, not swollen and incurved at tip, petals not or scarcely verrucose in dried material, glabrous throughout, keel absent inside, petals infolded at midpoint, ± flat at base, without any infolding of margins
Morphology Reproductive morphology Flowers Disc
Disk annular, a weakly-toothed rim, 0.5 mm high, densely hairy
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovaries placed above the disk, apparently flattened, clearly narrowed at base, c. 3 mm long, pilose or densely so, 2-locular; ovules 8 per loculus; style tapering to a point, c. 2.5 mm long
Morphology Reproductive morphology Fruits
Fruit unknown.
Morphology Reproductive morphology Inflorescences
Racemes borne behind leaves but condensed towards twig tips, 3 – 7 cm long, axis 0.7 mm thick at c. halfway and ± pubescent, 12 – 15-flowered; flowers bisexual, 4 – 6-merous (one bud 4-merous, one 5-merous, one 6-merous); bracts mostly early caducous, minute, triangular to broad-oblong, hairy but with usually naked tips, 0.5 – 1.5 mm long, often with a pair of 'stipules' at base, but not otherwise toothed; bracteoles absent; pedicels c. 7 mm long, 0.4 mm thick in flower; buds ovoid, acute at apex
Morphology Twigs
Twigs densely tomentose to almost scurfy at least at tip, sometimes ± persistently hairy behind current shoot growth, 2.5 – 3 mm thick towards the tip, with non-resinous, hairy terminal buds
Note
Known only from the type. Fruit is needed (to determine whether the embryo is straight or curved) before this new species can be placed to group. The collector, who had wide experience of the New Guinea flora, was deceived into thinking it was a Terminalia, which it certainly resembles at first sight. Schlechter (1916: 125) described Elaeocarpus terminalioides, based on Ledermann 9039 from the Sepik region of Papua New Guinea, the Berlin holotype of which is lost and only a sterile duplicate in K! is known; this was described as having a 5-locular ovary with 4 ovules per loculus and I currently treat it as insufficiently known but probably correctly placed in sect. Ptilanthus Schltr., now included in the Ganitrus group. Elaeocarpus johnsii, with its clearly 2-locular ovary, cannot be closely related. Field notes record that the leaves can reach 26 cm in length. A species strongly resembling a Terminalia in habit with short-petiolate leaves in tight terminal bunches on thick twigs, but of unknown affinity within Elaeocarpus.
Type
Indonesia: West Papua, Mimika, PTFI Concession area: Golf Course Kuala Kencana, near Timika, 4°24'S 136°52'E, at c. 10 m, 12 March 1999, R. J. Johns 9838 with P. Puradyatmika, P. Edwards, F. Willis, T. Utteridge, R. Wise, Soetrisno, Hansa, Arie (holotypus K! (K000260991); isotypi BO, MAN?).

Native to:

New Guinea

Elaeocarpus johnsii Coode appears in other Kew resources:

First published in Kew Bull. 74(3)-36: 4 (2019)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Kew Bulletin

  • Coode, M. J. E. (1978). A conspectus of Elaeocarpaceae in Papuasia. Brunonia 1(2): 131 – 302.
  • Coode, M. J. E. (1985). Aristotelia and Vallea, closely related in Elaeocarpaceae. Kew Bull. 40: 479 – 507.
  • Coode, M. J. E. (1996). Elaeocarpus for Flora Malesiana — notes, new taxa and combinations in the Acronodia group. Kew Bull. 51: 267 – 300.
  • Coode, M. J. E. (2001a). Elaeocarpus for Flora Malesiana — the E. stipularis complex, E. nitidus group & E. barbulatus. Kew Bull. 56: 513 – 565.
  • Coode, M. J. E. (2001b). Elaeocarpus for Flora Malesiana: the Coilopetalum group in Sulawesi & Maluku. Kew Bull. 56: 837 – 874.
  • Coode, M. J. E. (2005). Elaeocarpus for Flora Malesiana: E. crenulatus, E. myrtoides & E. amabilis from New Guinea, reconsidered. Kew Bull. 60: 305 – 311.
  • Coode, M. J. E. (2010). Elaeocarpus for Flora Malesiana: new taxa and understanding in the Ganitrus group. Kew Bull. 65: 355 – 399.
  • Coode, M. J. E. (2019). Elaeocarpus for Flora Malesiana: the Oreocarpus group in Malesia. Kew Bull. 74 (3).  https://doi.org/10.1007/S12225-019-9818-1.
  • Mandia, E. H. (1998). The Vegetation on the Northeastern Summit Zone of Mt. Halcon, Mindoro Island, Philippines [PhD dissertation]. University of the Philippines Los Banos, College, Laguna, Philippines: (Available at UPLB and DLSU-Manila Libraries).
  • Mandia, E. H. (2004). Gradient analysis of the plant communities on Mt. Halcon summit zone, Mindoro Island, Philippines. Philipp. Scientist 41: 91 – 116.
  • Schlechter, R. (1916). Die Elaeocarpaceen Papuasiens. Bot. Jahrb. Syst. 54: 92 – 155.
  • Smith, A. C. (1944). Studies of Papuasian plants VI. Elaeocarpus L. J. Arnold Arbor. 25: 222 – 270.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0