Leaf macro- and micro-morphological characters as taxonomic tools for some Asteraceae species

DALIA GODA GABR

doi:10.30848/PJB2024-1(20)

Author(s)

DALIA GODA GABR Botany and Microbiology Department, Faculty of Science (Girls Branch), AL Azhar University, Cairo, Egypt

Abstract

The morphological and epidermal characters of leaves of 10 Asteraceae species, collected from Dammam city in the eastern region of Saudi Arabia were examined to highlight their significance in identification and classification. Several morphological leaf characters played a crucial role in delimitation of the studied species, including leaf arrangement, type, shape, and the presence or absence of a petiole. Regarding anatomical features, two types of mesophylls were observed, and subsidiary bundles were present in both the petiole and blade. Six types of cuticular ornamentation and 12 different types of trichomes were found. The numerical analysis of the obtained characters demonstrated that the leaf characteristics were taxonomically important for classification and differentiation at the subfamily and generic levels.

Publication Details

Page(s) 97-110

DOI 10.30848/PJB2024-1(20)

Published Journal: Pakistan Journal of Botany, Volume: 56, Issue: 1, Year: 2024

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Keywords

anatomy, anatomy, anatomy, Trichomes, Asteraceae, stomata, scanning electron microscope, Leaf morphology, Eastern region of Saudi Arabia

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