Leaf Anatomical Characteristics of Nepenthes Species in Western Sarawak, Borneo

Mohd Hisham  Nabilah Huda; Kalu  Meekiong; Hashimah  Elias

doi:10.55230/mabjournal.v51i5.2339

Authors

Mohd Hisham Nabilah Huda
nabilahhuda1709@gmail.com
Plant Resource Science and Technology Programme, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia
Kalu Meekiong Plant Resource Science and Technology Programme, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia
Hashimah Elias Plant Resource Science and Technology Programme, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia

Keywords:

Anatomy, carnivorous plants, lowland species, Malaysia, Nepenthaceae, pitcher plants

Abstract

The dimorphism and phenotypic plasticity of genus Nepenthes is taxonomically challenging. They depicted a variety of pitcher morphological features that often lead to difficulty in the species delineation. However, there is an alternative that could aid to distinguish the Nepenthes species which is by observing the anatomical characteristics of their leaves. Despite few researches had reported the comparative study on leaf anatomy of certain Nepenthes species, yet, there are very scarce data showing other distinct anatomical characteristics that could be used to differentiate the Nepenthes species especially in the western of Sarawak. Hence, this research was performed to identify anatomical characteristics that could be useful taxonomic tools for Nepenthes species identification. There are nine species with one variety and three natural hybrids were included in the study namely, Nepenthes albomarginata Lobb, N. ampullaria Jack, N. gracilis Korth, N. hirsuta Hook. f., N. hispida Beck, N. mirabilis (Lour.) Druce, N. mirabilis var. echinostoma (Hook. f.) J. H. Adam & Wilcock, N. nazreeana sp. nov. ined., N. rafflesiana Jack, N. reinwardtiana Miq., N. x trichocarpa Miq, N. x hookeriana Lindl, and N. x kuchingensis Sh. Kurata. The anatomical data of leaves, i.e stomatal complex type, stomatal size and density, type of anticlinal walls, type of glandular structures and others were analysed, tabulated and discussed.

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