Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak

Heptapleurum Gaertn. is a genus that belongs to the Araliaceae family. Previously, all the species in this genus were placed under the Asian Schefflera J. R. Forst. & G. Forst.. After transferring all the species, the genus is now known as the largest genus in Araliaceae and can be found at trop...

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Main Author:	Norazira, Ramnor
Format:	Thesis
Language:	English
Published:	2024
Subjects:	QK Botany
Online Access:	http://ir.unimas.my/id/eprint/46067/1/Norazira%20%2820020006%29-Taxonomic%20Study%20of%20the%20Genus%20Heptapleurum%20Gaertn.%20%28Araliaceae%29%20in%20Sarawak.pdf
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id	my-unimas-ir.46067
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spelling	my-unimas-ir.460672024-09-22T23:56:23Z Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak 2024-08-29 Norazira, Ramnor QK Botany Heptapleurum Gaertn. is a genus that belongs to the Araliaceae family. Previously, all the species in this genus were placed under the Asian Schefflera J. R. Forst. & G. Forst.. After transferring all the species, the genus is now known as the largest genus in Araliaceae and can be found at tropical and subtropical of Asia and on several islands and archipelagos of the western Pacific. There are some studies of Heptapleurum that have been done in other regions. However, the information on the species in is still lacking and poorly understood in Sarawak. Therefore, the objectives of this study were to determine the number of Heptapleurum taxa in Sarawak, to construct a taxonomic key of Heptapleurum taxa in Sarawak, to describe all the Heptapleurum taxa in Sarawak based on the herbarium specimens and to make a distribution map of Heptapleurum taxa in Sarawak. The observation and measurements of both vegetative and reproductive parts were made from the herbarium specimens from Sarawak Herbarium (SAR) and Unimas. A distribution map was created by using ArcMap 10.3. Based on the observations of all 583 specimens, there are 73 Heptapleurum taxa in Sarawak. Out of 73 taxa, 25 taxa are published species, 27 taxa are unpublished and 21 are imperfectly known taxa. The distribution map, taxonomic key and description of all Heptapleurum taxa in Sarawak are presented here in this study. The genus can be found throughout Sarawak in various types of habitat with elevational ranges from near sea level up to the highest peak in Sarawak which is 2424 m on Mount Murud. From this study, it is concluded that there are still many undiscovered and unidentified taxa of Heptapleurum in Sarawak. Further study about this genus in Sarawak is much needed to improve the knowledge of this challenging genus. Universiti Malaysia Sarawak 2024-08 Thesis http://ir.unimas.my/id/eprint/46067/ http://ir.unimas.my/id/eprint/46067/1/Norazira%20%2820020006%29-Taxonomic%20Study%20of%20the%20Genus%20Heptapleurum%20Gaertn.%20%28Araliaceae%29%20in%20Sarawak.pdf text en public masters Universiti Malaysia Sarawak Faculty of Resource Science and Technology
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	QK Botany
spellingShingle	QK Botany Norazira, Ramnor Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
description	Heptapleurum Gaertn. is a genus that belongs to the Araliaceae family. Previously, all the species in this genus were placed under the Asian Schefflera J. R. Forst. & G. Forst.. After transferring all the species, the genus is now known as the largest genus in Araliaceae and can be found at tropical and subtropical of Asia and on several islands and archipelagos of the western Pacific. There are some studies of Heptapleurum that have been done in other regions. However, the information on the species in is still lacking and poorly understood in Sarawak. Therefore, the objectives of this study were to determine the number of Heptapleurum taxa in Sarawak, to construct a taxonomic key of Heptapleurum taxa in Sarawak, to describe all the Heptapleurum taxa in Sarawak based on the herbarium specimens and to make a distribution map of Heptapleurum taxa in Sarawak. The observation and measurements of both vegetative and reproductive parts were made from the herbarium specimens from Sarawak Herbarium (SAR) and Unimas. A distribution map was created by using ArcMap 10.3. Based on the observations of all 583 specimens, there are 73 Heptapleurum taxa in Sarawak. Out of 73 taxa, 25 taxa are published species, 27 taxa are unpublished and 21 are imperfectly known taxa. The distribution map, taxonomic key and description of all Heptapleurum taxa in Sarawak are presented here in this study. The genus can be found throughout Sarawak in various types of habitat with elevational ranges from near sea level up to the highest peak in Sarawak which is 2424 m on Mount Murud. From this study, it is concluded that there are still many undiscovered and unidentified taxa of Heptapleurum in Sarawak. Further study about this genus in Sarawak is much needed to improve the knowledge of this challenging genus.
format	Thesis
qualification_level	Master's degree
author	Norazira, Ramnor
author_facet	Norazira, Ramnor
author_sort	Norazira, Ramnor
title	Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
title_short	Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
title_full	Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
title_fullStr	Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
title_full_unstemmed	Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak
title_sort	taxonomic study of the genus heptapleurum gaertn. (araliaceae) in sarawak
granting_institution	Universiti Malaysia Sarawak
granting_department	Faculty of Resource Science and Technology
publishDate	2024
url	http://ir.unimas.my/id/eprint/46067/1/Norazira%20%2820020006%29-Taxonomic%20Study%20of%20the%20Genus%20Heptapleurum%20Gaertn.%20%28Araliaceae%29%20in%20Sarawak.pdf
_version_	1811771587613949952

Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak

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