Abstract
The Asteraceae is a diverse plant species and widely distributed, especially in the tropics and subtropics, consisting of 1,600 - 1,700 genera which include 24,000 - 30,000 species. Asteraceae has characteristics of cup flowers and brackets that are not owned by other plants. The objective of this study was to determine the morphological structure of plants and escpecially the leaf glandular trichome in several species of Asteraceae. The research method used was a descriptive method, to describe and interpret the shape, structure and distribution of leaf trichome in the Asteraceae family. This study used eight species of the Asteraceae family, namely Elephantopus mollis, Bidens pilosa, Tithonia deversifolia, Tridax procumbens, Synedrella nodiflora, Eclipta prostrate, Sphagneticola trilobata and Ageratum conyzoides. The observation results of trichomes at 8 species by Scanning Electrone Microscope (SEM) was obtained varied forms of trichomes, both in shape and size. From the research, it was obtained that the forms of multicellular glandular trichome with various shapes, ranging in size from 50.6 µm - 831.9 µm.   Â
Highlights
Astercaeae (Compositae) family is a Trichome is hair that grow from widely dispersed family group
The objective of this study was to determine the morphological structure of plants and escpecially the leaf glandular trichome in several species of Asteraceae
There are about 24,000 appears on the outer surface of almost all species covered in 1600 genera, which are plant organs, both in vegetative organs such spread all over the world, except Antarctica as leaves, branches, protective leaves and (Bayer et al, 2009; Simanjuntak, 2017) The roots and reproductive organs such as Malesia area has 42 introduced clans and sepals, petals, stamen, gynosium, seeds and 64 cultivated clans(Steenis, 2008)
Summary
Astercaeae (Compositae) family is a Trichome is hair that grow from widely dispersed family group. The objective of this study was to determine the morphological structure of plants and escpecially the leaf glandular trichome in several species of Asteraceae. The research method used was a descriptive method, to describe and interpret the shape, structure and distribution of leaf trichome in the Asteraceae family.
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