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This species is accepted, and its native range is Sumatera.

[KBu]

Coode, M.J.E. 2014. Elaeocarpus for Flora Malesiana: the Monocera group in western Malesia. Kew Bulletin 69: 9487. DOI https://doi.org/10.1007/s12225-014-9487-z

Conservation
Data Deficient (DD), but there being only two collections suggests vulnerability.
Distribution
Sumatra.
Ecology
‘Forest, swamp’, implying low altitude?; tree height probably c. 27 m — ‘stam 15.20 m kroon 12 m’.
Morphology General Habit
Trees
Morphology Leaves
Leaves spirally arranged, loosely grouped towards twig tips; petioles 1.4 – 2.2 cm long, glabrous or with a few short adpressed hairs, rounded or flat in apical third above, merging into decurrent leaf-base, not swollen at apex, somewhat swollen or geniculate at base; blades chartaceous, obovate, 1.8 – 2.2 × as long as wide, 9 – 15 × 5 – 7 cm, mostly rounded at apex, narrowly cuneate to cuneate at base, with a few short, adpressed hairs beneath, with 7 – 10 pairs of arcuate-ascending main veins (sometimes with very minute domatia in vein axils), weakly or obviously serrate, the teeth 4 – 9 mm apart in apical half
Morphology Leaves Stipules
Stipules caducous, tough, narrow-triangular, sericeous outside, 2 – 3 mm long, entire
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 45 – 60, inserted between disk and ovary, persisting longer than both sepals and petals; filaments straight, 1 – 2 mm long, glabrous or with a few rather long straight hairs especially at base; anthers minutely spreading-asperous, 2 – 3 (– 3.5 on Achmad 1613) mm long excluding awn, outer tooth much longer than inner and with a fairly robust awn 0.5 – 2 mm long sometimes strikingly retrorse-barbulate
Morphology Reproductive morphology Flowers Calyx
Sepals falling earlier than stamens, narrow-triangular, 8 – 10 × 2 – 2.5 mm, fairly densely short-adpressed-hairy outside, inside with sparse short adpressed hairs ± throughout, but less in central band, with low keel inside at base at least
Morphology Reproductive morphology Flowers Corolla
Petals thin and translucent distally, thicker towards base, obovate or oblong (difficult to tell, with large strongly infolded side-flanges) 10 – 11 mm long, 4 – 5.5 mm wide at widest point of undivided part, rounded at apex and divided into 3 – 10 divisions (sometimes 3 – 5-lobed with smaller subsidiary teeth and divisions thus unequal in length), divisions 0.1 – 1 ( – 1.5) mm long and obtuse or rounded at tip), petals densely pilose outside in lower two-thirds or as far up as petal division, margins densely short-hairy in lower half, hairy on keel and margins inside at least but with glabrous areas between and towards the apex, the flanges glabrous, with a single keel at base, forking just above base into 2, strongly 2-pocketed at base and forming a distinct "sac" when opened out
Morphology Reproductive morphology Flowers Disc
Disk annular, toothed, short-hairy
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 2.5 mm long, ± sericeous-pilose, 2-locular, ovules 8 per loculus, style tapering, 5 – 6 mm long
Morphology Reproductive morphology Fruits
Fruit unknown.
Morphology Reproductive morphology Inflorescences
Racemes mostly among or just behind the leaves at anthesis, 4 – 10 cm long, axis with sparse, short, straight, adpressed hairs, 5 – 12-flowered (perhaps – 15?), flowers bisexual, 5-merous; bracts early caducous, broad-triangular, 1 mm by c- 1.5 mm, tough, adpressed-hairy, entire; pedicels (6 –) 9 – 28 mm long in flower, slender and straight in the type, short-hairy; buds ovoid, acute at apex
Morphology Twigs
Twigs short-hairy at tip, with non-resinous, hairy terminal buds
Note
Fruit (and DNA material) is needed to confirm how closely Achmad’s two collections, with their shorter petal divisions and shorter anther awns, are related to Elaeocarpusmacrocerus, which has also been found on Simuelue.

Weibel (mss) wrote about Achmad 1613: ‘like E. pierrei in the low number of stamens, but petals 2-keeled inside more like macrocerus’.

Native to:

Sumatera

Elaeocarpus achmadii Coode appears in other Kew resources:

First published in Kew Bull. 69(1)-9487: 7 (2014)

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

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  • Coode, M. J. E. (1995). Elaeocarpus in the Flora Malesiana area — E. kraengensis and ten new species from Sulawesi. Kew Bull. 50: 267 – 294.CrossRefGoogle Scholar
  • Coode, M. J. E. (1998). Elaeocarpus for Flora Malesiana — notes, new taxa, names and combinations for Borneo. Kew Bull. 53: 83 – 128.CrossRefGoogle Scholar
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  • Koorders, S. H. (1914 – 15). Atlas der Baumarten von Java 3 (1) (part 1 published 1914, parts 2 – 4 published 1915, bound together with part 1, 1915 printed on title page). Figs 420 – 434. Buch- und steindruckerei von F. P. W. M. Trap, Leiden.
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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