Sains Malaysiana 52(5)(2023): 1333-1343

http://doi.org/10.17576/jsm-2023-5205-01

The Anatomy and Morphology of Taenitis Willd. ex Sprengel (Monilophytes) in Peninsular Malaysia

(Anatomi dan Morfologi Taenitis Willd. ex Sprengel (Monilofit) di Semenanjung Malaysia)

HAJA MAIDEEN*, NURUL NADHIRAH, NUR ALIAH & NIK NORHAZRINA

Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

Received: 29 December 2021/Accepted: 4 May 2023

Abstract

The present study investigates the anatomical and morphological characteristics of four Taenitis species sampled from several localities in Peninsular Malaysia, namely Taenitis blechnoides, T. interrupta, T. dimorpha and Taenitis sp. The morphological and anatomical characters were observered with compound and dissecting microscopes, and sliding microtome. The species exhibited varying frond sizes (length and width) and positions of sori. Conversely, all the species showed common short creeping rhizomes with black hairy scales, scales at the base of stipes, U-shaped steles, simple trichome, sclerenchyma cells under the epidermis on stipes and rhizomes, polocytic stomata, and sinuous anticlinal walls. Morphologically, the frond form of Taenitis sp. is distinct from the other Taenitis. Thus, the species could be a new record for ferns in Peninsular Malaysia. However, molecular studies are required to confirm this.

Keywords: Endemic; Monilophytes; Pteridaceae; Taenitis

Abstrak

Kajian ini menentukan ciri anatomi dan morfologi empat spesies Taenitis yang diambil dari beberapa lokaliti di Semenanjung Malaysia, iaitu Taenitis blechnoides, T. interrupta, T. dimorpha dan Taenitis sp. Penelitian ciri morfologi dan anatomi dilakukan menggunakan mikroskop majmuk, mikroskop pembedahan dan mikrotom gelongsor. Spesies yang dikaji menunjukkan pelbagai saiz fron (panjang dan lebar) dan kedudukan sorus. Sebaliknya, kesemua spesies yang dikaji menunjukkan ciri rizom menjalar pendek dengan berwarna kehitaman di bahagian pangkal stip, stel berbentuk ‘U’, trikom jenis ringkas, sel skelerenkima di bawah lapisan epidermis pada stip dan rizom, stomata jenis polositik dan dinding antiklin jenis sinuos yang berliku. Bentuk fronTaenitis sp. berbeza daripada spesiesTaenitis yang lain. Oleh itu, spesies ini berkemungkinan merupakan rekod baharu paku pakis di Semenanjung Malaysia. Namun kajian lanjutan dalam molekul diperlukan untuk mengesahkannya.

Kata kunci: Endemik; Monilofit; Pteridaceae; Taenitis

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^*Corresponding author; email: deen@ukm.edu.my