Abstract
Trichome morphology on the leaves of the 17 plant species belonging to family Asteraceae was investigated by light and scanning electron microscopy. Our data revealed that both eglandular and glandular trichomes were present in the taxa. Out of 17 species, 6 species showed glandular trichomes viz. Pluchea arguta, Pluchea lanceolata, Pulicaria angustifolia, Tridax procumbens, Vernonia cinerascens and Pulicaria carnosa; while 11 species showed eglandular trichomes viz. Blainvillea latifolia, Blumea obliqua, Conyza bonariensis, Conyza canadensis, Dicoma schimperi, Dicoma tomentosa, Eclipta prostrata, Echinops echinatus, Erigeron Canadensis, Lactuca remotiflora and Vernonia cinerea. Mostly trichomes were multicellular. The trichomes were usually conical in shape with pointed tips and distinct trichome bases. In few species trichomes base was indistinct. Cylindrical shape trichomes were also observed.
