A revision of Ziziphus (Rhamnaceae) in Borneo

Daniel Cahen; Jess Rickenback; Timothy M A Utteridge

doi:10.1007/S12225-021-09970-3

A revision of Ziziphus (Rhamnaceae) in Borneo

Daniel Cahen^*, Jess Rickenback, Timothy M A Utteridge

^*Corresponding author for this work

School of Geosciences

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Abstract / Description of output

The genus Ziziphus (Rhamnaceae) is revised for Borneo. 13 species are recognised using morphological evidence, including three new endemic species: Ziziphus cuspidata, Z. domatiata and Z. puberula. Borneo is therefore the island with the greatest known diversity of Ziziphus species. The area surrounding Mount Kinabalu is particularly diverse, with nine species occurring in Ranau. Two new varieties of Z. borneensis are also described here, Z. borneensis var. ranggam and Z. borneensis var. velutina, five new synonyms are established, including the placement of Z. elmeri as a synonym of Colubrina beccariana. A taxonomic treatment, including a preliminary IUCN conservation status assessment, is presented for each species and variety.

Original language	English
Pages (from-to)	767-804
Journal	Kew Bulletin
Volume	76
DOIs	https://doi.org/10.1007/S12225-021-09970-3
Publication status	Published - 10 Nov 2021

Keywords / Materials (for Non-textual outputs)

conservation
IUCN
Malesia
South-East Asia
tropical climbers
taxonomy

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10.1007/S12225-021-09970-3Licence: Creative Commons: Attribution (CC-BY)

s12225-021-09970-3
© The Author(s), 2021
Final published version, 3.64 MBLicence: Creative Commons: Attribution (CC-BY)

https://link.springer.com/article/10.1007/s12225-021-09970-3Licence: Creative Commons: Attribution (CC-BY)

Cite this

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title = "A revision of Ziziphus (Rhamnaceae) in Borneo",

abstract = "The genus Ziziphus (Rhamnaceae) is revised for Borneo. 13 species are recognised using morphological evidence, including three new endemic species: Ziziphus cuspidata, Z. domatiata and Z. puberula. Borneo is therefore the island with the greatest known diversity of Ziziphus species. The area surrounding Mount Kinabalu is particularly diverse, with nine species occurring in Ranau. Two new varieties of Z. borneensis are also described here, Z. borneensis var. ranggam and Z. borneensis var. velutina, five new synonyms are established, including the placement of Z. elmeri as a synonym of Colubrina beccariana. A taxonomic treatment, including a preliminary IUCN conservation status assessment, is presented for each species and variety.",

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author = "Daniel Cahen and Jess Rickenback and Utteridge, {Timothy M A}",

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doi = "10.1007/S12225-021-09970-3",

language = "English",

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journal = "Kew Bulletin",

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T1 - A revision of Ziziphus (Rhamnaceae) in Borneo

AU - Cahen, Daniel

AU - Rickenback, Jess

AU - Utteridge, Timothy M A

PY - 2021/11/10

Y1 - 2021/11/10

N2 - The genus Ziziphus (Rhamnaceae) is revised for Borneo. 13 species are recognised using morphological evidence, including three new endemic species: Ziziphus cuspidata, Z. domatiata and Z. puberula. Borneo is therefore the island with the greatest known diversity of Ziziphus species. The area surrounding Mount Kinabalu is particularly diverse, with nine species occurring in Ranau. Two new varieties of Z. borneensis are also described here, Z. borneensis var. ranggam and Z. borneensis var. velutina, five new synonyms are established, including the placement of Z. elmeri as a synonym of Colubrina beccariana. A taxonomic treatment, including a preliminary IUCN conservation status assessment, is presented for each species and variety.

AB - The genus Ziziphus (Rhamnaceae) is revised for Borneo. 13 species are recognised using morphological evidence, including three new endemic species: Ziziphus cuspidata, Z. domatiata and Z. puberula. Borneo is therefore the island with the greatest known diversity of Ziziphus species. The area surrounding Mount Kinabalu is particularly diverse, with nine species occurring in Ranau. Two new varieties of Z. borneensis are also described here, Z. borneensis var. ranggam and Z. borneensis var. velutina, five new synonyms are established, including the placement of Z. elmeri as a synonym of Colubrina beccariana. A taxonomic treatment, including a preliminary IUCN conservation status assessment, is presented for each species and variety.

KW - conservation

KW - IUCN

KW - Malesia

KW - South-East Asia

KW - tropical climbers

KW - taxonomy

UR - https://link.springer.com/article/10.1007/s12225-021-09970-3

U2 - 10.1007/S12225-021-09970-3

DO - 10.1007/S12225-021-09970-3

M3 - Article

SN - 0075-5974

VL - 76

SP - 767

EP - 804

JO - Kew Bulletin

JF - Kew Bulletin

ER -

A revision of Ziziphus (Rhamnaceae) in Borneo

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Keywords / Materials (for Non-textual outputs)

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