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This species is accepted, and its native range is Borneo (Sarawak).

[KBu]

Drinkell, C. & Utteridge, T.M.A. 2015. A revision of the genus Systellantha B. C. Stone. Studies in Malaysian Myrsinaceae IV. Kew Bulletin 70: 50. DOI https://doi.org/10.1007/s12225-015-9603-8

Type
Type: Malaysia, Sarawak, Kapit Division, Balang/Balleh, Ulu Baleh [1°35'0""N 114°30'0""E], 5 July 1969, Paie S 28422 (holotype SAR n.v.; isotypes A n.v., E!, K!, L n.v., MEL n.v.).
Morphology General Habit
Shrub to c. 3 m
Morphology General Indumentum
Indumentum of minute, fuscous simple and ferruginous multi-cellular hairs with a sub-globose glandular apex, and elliptic to linear sessile glands
Morphology Branches
Branches slender, fawn, internodes ridged on each side, sparsely hairy with both hair types
Morphology Leaves
Leaves: blade lanceolate, 11 – 18 cm long, 1.5 – 4.2 cm wide, coriaceous, apex long attenuate, base acute, margins drying undulate, revolute; secondary venation obscure, 20 – 40 pairs; lamina ab- and adaxially sparsely sessile-glandular; petiole 4 – 15 mm long, sparsely hairy
Morphology Reproductive morphology Inflorescences
Inflorescences small, axillary; basal bracts 1 mm long, densely covered with multi-cellular hairs and sessile glands; pedicels 1 – 3 mm long (up to 4 mm long in fruit), sparsely covered with multi-cellular hairs with a sub-globose glandular apex
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens c. 3 mm long, c. 1 mm wide, filament c. 0.5 mm long, anthers lanceolate, connective caudate, drying ferruginous
Morphology Reproductive morphology Flowers
Pistillate flower: n.v. Staminate flowers: calyx lobes triangular, c. 1 mm long, apex acute, margins hyaline, hairy with multi-cellular hairs only, abaxially sessile-glandular; tubular corolla fused to 0.7 mm length, corolla lobes ovate, apex attenuate, c. 4 mm long, c. 2 mm wide, flesh-coloured (fideRichards 2388), ab- and adaxially sparsely sessile-glandular (multi-cellular hairs adaxially only from the base to the middle of the petal)
Morphology Reproductive morphology Fruits
Fruit sub-globose, apex very short acuminate, 7 – 10 mm long, 5 – 8 mm diam., fruit colour orange (fide Yii et al-S 52212), ripening medium blue (fide Anderson S 28372) to purplish (fide Paie 28422), densely sessile-glandular.
Distribution
Malaysia: endemic to Sarawak and only know from Kapit and Miri Divisions.
Ecology
Collected from primary dipterocarp forest; 500 – 1000 m above sea level.
Conservation
Systellantha fruticosa is given a preliminary assessment of Vulnerable VUB1ab (i, ii, iii). This taxon is only known from five collections from five locations, and both northern collections (Richards 2388 and Mohtar & Yii S 66206) are from areas that have been logged (apparent due to the network of logging roads from satellite imagery) but satellite imagery indicates that more southern collections from the Balleh river region are from areas that appear to have undergone less habitat conversion. Whilst AOO of 20 km2 falls within the Endangered threshold, we have used the EOO figure as a better indicator of population size partly because of the larger areas of extant habitat in the southern part of the species’ range. The EOO of 9,227 km2 falls within the Vulnerable threshold, and together with the number of locations (no more than 10), this threat category is proposed here.
Note
This species is very distinct on account of the comparatively thicker leaves, being the only member of the genus with coriaceous leaves, the entire leaf margins, and the fruit drying sub-globose with shorter fruiting pedicels (up to 4 mm long). All of the specimens have very narrow leaves (up to 23 mm wide), except for Richards 2388 which is slightly broader (42 mm wide) but falls within the range of variation in all other characters, and, in addition, is from a similar habitat in Sarawak. S. fruticosa has simple and multi-cellular hairs on the branches and petioles.

Native to:

Borneo

Systellantha fruticosa (B.C.Stone) B.C.Stone appears in other Kew resources:

Date Reference Identified As Barcode Type Status
bin Paei, I. [28422], Sarawak K000575433 isotype
bin Paei, I. [28422], Sarawak K000575434 isotype

First published in Malayan Nat. J. 46: 21 (1992)

Accepted by

  • Drinkell, C. & Utteridge, T.M.A. (2015). A revision of the genus Systellantha B.C.Stone. Studies in Malaysian Myrsinaceae IV Kew Bulletin 70(50): 1-50. Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Drinkell, C. & Utteridge, T.M.A. (2015). A revision of the genus Systellantha B.C.Stone. Studies in Malaysian Myrsinaceae IV Kew Bulletin 70(50): 1-50. Royal Botanic Gardens, Kew.

Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

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