The trichome of 12 species from five genera of the Lamiaceae family, comprising Petraeovitex bambusetorum, Petraeovitex membranacea, Petraeovitex wolfei, Petraeovitex scortechinii, Petraeovitex trifoliata, Peronema canescens, Congea forbesii, Congea griffithiana, Sphenodesme racemosa, Sphenodesme triflora, Sphenodesme pentandra, and Rotheca serrata was investigated under scanning electron microscope (SEM). This study aimed to assess their ultrastructure and ascertain their respective taxonomic value accordingly. Two types of glandular trichomes, specifically peltate and capitate, and three types of non-glandular trichomes, namely, multicellular uniseriate, stellate, and conical were thus observed. The stellate type of non-glandular trichome was solely found in S. pentandra among the 12 studied species, while the data further demonstrated both Congea species to reflect the multicellular uniseriate structure on the respective leaf surfaces, whereas C. forbesii depicted the longest length.....

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The comparative study was conducted to investigate the systematics of six genera of Lamiaceae and two genera of Verbenaceae. Three aspects of the study, which were morphological, anatomical and phytochemical, were carried out to determine significant taxonomic characters. The data obtained were then used to construct taxonomic keys for genera and species involved. A total of 22 species were collected from several forest reserves in Malaysia. Samples were prepared for herbarium vouchers, anatomical study, and phytochemical procedures. Morphological characters were observed and recorded. Anatomical slides of leaf were prepared using standard microtechnique method, while phytochemical screening was conducted using Qualitative Phytochemical Screening and Thin Layer Chromatograph (TLC). All characters obtained were numerically analyzed using the Multivariate Statistical Package (MVSP) and Phylogeny Analysis Using Parsimony (PAUP). The findings showed that some characters have hi.....

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