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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: Universiti Malaysia Sarawak 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
http://ir.unimas.my/id/eprint/46067/
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spelling my.unimas.ir.460672024-09-22T23:56:23Z http://ir.unimas.my/id/eprint/46067/ Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak 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 Out of 73 taxa, 25 taxa are published species, 27 taxa are unpublished and 21 are imperfectly known taxa.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 2024-08-29 Thesis NonPeerReviewed text en 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 Norazira, Ramnor (2024) Taxonomic Study of the Genus Heptapleurum Gaertn. (Araliaceae) in Sarawak. Masters thesis, Universiti Malaysia Sarawak.
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
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
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
publisher Universiti Malaysia Sarawak
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
http://ir.unimas.my/id/eprint/46067/
_version_ 1811693729843511296
score 13.211869

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