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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 mid-montane forest. Granites and areas of volcaniclastic sediments.
Morphology General Habit
Treelets 3 m high
Morphology Leaves
Leaves loosely grouped towards twig tips; petioles 0.6 – 1.2 cm long, 1.2 mm wide, hairy like the twigs, not verrucose when mature, rounded or flat in apical third above, distinct from leaf-base and petioles without flanges, at most only slightly swollen or geniculate and usually without pegs at apex, not swollen and geniculate at base; blades chartaceous, elliptic, 2.1 – 2.7 × as long as wide, 5 – 9.5 × 2.5 – 3.5 cm, not acuminate, acute to obtuse at apex (60 – 90°), cuneate at base, dull above, with some indumentum beneath when mature, with fairly dense or dense (especially on veins), medium-long, straight or curved hairs between adpressed and spreading, not or scarcely verrucose when mature, with 5 – 6 pairs of main veins at 40 – 50° to midrib (after the initial squarish insertion, strongly curved forward), fine venation network obscure or somewhat raised above, about as strong as laterals or stronger, areoles squarish and > 2 mm across, or slightly raised and with main veins deeply impressed above, midrib and main laterals prominent beneath or strongly so, main laterals breaking up 1/21/2 – 7/87/8 inside margin, domatia absent, without dark dots beneath, margins weakly serrate, with serrations similar throughout the leaf-length (fine ± adpressed hair-points often present), teeth 1.5 – 3 mm apart
Morphology Leaves Stipules
Stipules caducous, very narrow-triangular, tapering, hairy all over like twigs, not glabrous at tip, 1 – 1.5 mm long, entire
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 8 (– 10? or more — no buds present to give a good count), inserted ± between disk and ovary, falling before sepals or petals or both; filaments (at least outer ones) ± sigmoid, 0.7 – 0.9 mm long, not tapering, glabrous; anthers minutely sparsely hairy, c. 1.6 mm long, with outer and inner teeth of about the same length, apex rounded, without awn or beak, without setae at tip
Morphology Reproductive morphology Flowers Calyx
Sepals persistent after petals and stamens, narrow-ovate, thin with venation visible, 3 – 4 × 1 – 1.5 mm, medium to dense-hairy outside, glabrous inside or mostly glabrous but minutely hairy towards tip, not verrucose outside at anthesis, with low keel inside at base at least
Morphology Reproductive morphology Flowers Corolla
Petals ± membranous, obovate or spathulate with slight narrowing towards junction of claw and limb, sometimes almost clawed in lower third, 4 mm long, 2 mm wide at widest point of limb, rounded at apex, divided into 13 – 15 apical divisions ± equal in length and not grouped into lobes, divisions narrow, linear, 0.5 – 1 mm long, not swollen and incurved at tip, petals not verrucose in dried material, glabrous throughout, keel absent inside, ± flat at midpoint, flat or incurved at base, without any pockets
Morphology Reproductive morphology Flowers Disc
Disk annular to slightly pulviniform, scarcely grooved, 0.8 mm high, short-hairy
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovaries placed above the disk, clearly narrowed at base, c. 1 mm long, densely short- to medium-hairy, 3-locular; ovules 4 per loculus
Morphology Reproductive morphology Flowers Gynoecium Style
‘Styles’ 3, divided to base, i.e. with free styles, 1 mm long
Morphology Reproductive morphology Inflorescences
Racemes borne among current leaves or behind them, 2.5 – 8 cm long, axis 0.8 – 0.9 mm thick at c. halfway and with dense, medium-long, straight, spreading hairs, 7 – 18-flowered; flowers bisexual, 5-merous; bracts sometimes ± persistent, very narrow-triangular, densely hairy like the axis, not glabrous at tip, 1 – 2 mm long, entire; bracteoles absent; buds not seen; pedicels 4 – 7 mm long and 0.4 mm thick in flower
Morphology Twigs
Twigs persistently hairy behind current shoot growth, with dense, medium-long, straight or curved hairs (both adpressed and ± spreading), 1.5 – 2 mm thick on current growth, with non-resinous, hairy terminal buds
Note
The glabrous petals should also help to identify the species. Initially, I thought it a variant of Elaeocarpus densiflorus R.Knuth, but there are differences: E. davisii was a 3 m treelet (E. densiflorus is recorded as 8 – 25 m) with twigs 1.2 – 2 mm thick, (not 3.5 – 5 mm), 5 – 6 ‘pairs’ of leaf veins (not 10 – 15), racemes 2.5 – 8 cm long (not 10 – 20 cm) with 7 – 18 flowers (not 25 – 70) and stamens 8 – (10?) (not 15 – 20) apart from the divided vs undivided style. Perhaps E. davisii may be found to be related to E. amabilis Kaneh. & Hatus. (Coode 2005), also known from the Vogelkop; this can be distinguished by its sparsely hairy twigs and petioles, smaller ovate acuminate leaves (1.7 – 3 × 0.7 – 1.3 cm) with ± rounded bases, and petals somewhat hairy outside and with fewer divisions (c. 6). Fruit is needed to establish whether the seed is straight or curved; if curved, then Elaeocarpus davisii cannot be related to the straight-seeded E. amabilis. A species of unknown affinity; leaves short-petiolate, elliptic, 5 – 9.5 × 2.5 – 3.5 cm, main nerves 5 – 6 on each side; racemes 2.5 – 8 cm long with 7 – 18 flowers; petals membranaceous with 13 – 15 linear divisions at the apex, glabrous throughout; stamens 8 or perhaps a few more (up to 10?), rounded at apex and lacking setae or awn; ovary densely short-hairy, 3-locular, loculi 4-ovulate; ‘styles’ apparently divided into 3 to base. Free or partially divided styles are known in Vallea and some species of Aristotelia (see Coode 1985) but are not otherwise known in the rest of the Elaeocarpaceae, although Sericolea and a few species of Elaeocarpus may have bifid tips or apical notches on the styles, such as E. pachyophrys Warb. of Borneo and E. bilobatus Schltr. of New Guinea. Known only from the type. More material needed to establish whether the peculiar character of ‘free styles’ is consistent.
Type
Indonesia: West Papua, Manokwari, Kebar Valley, Andai to Nettoti, 0°44'S 133°03'E, 1740 m, fl. 6 May 1995, A. P. Davis 775 (holotypus K! K000708375); isotypi BO, MAN?).

Native to:

New Guinea

Elaeocarpus davisii Coode appears in other Kew resources:

First published in Kew Bull. 74(3)-36: 2 (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