Pollen Micromorphology among Amaranthaceous Species from Desert Rangeland: Exine Stratification and their Taxonomic Significance

The aim of the study was to visualize micromorphology Amaranthaceous pollen using scanning electron microscopy collected from Thal Desert. Field collection conducted July September 2021. A total 14 taxa family Amaranthaceae were which belong nine genera. Achyranthes aspera, Aerva javanica, lanata, Amaranthus graecizans, retroflexus, viridis, Bassia indica, Chenopodium album, ficifolium, murale, Digera muricata, Haloxylon stocksii, Salsola tragus, and Suaeda fruticosa studied in terms morphotypes. Pollen acetolyzed observed under optical microscopy. Qualitative quantitative characters measured analyze uncover its taxonomic significance. shape polar equatorial views; most frequent spheroidal view, whereas prolate dominant shape. Exine ornamentation is key characteristic very helpful, eight different types ornamentations taxa: smooth sparsely granulate, scabrate-spinulose, microspinulose perforate, microechinate scabrate metareticulate, nanospinulate, granulate-spinulose granulate-perforate echinate, perforate. Periporate-type aperture among all taxa. Mesoporia, ektexinous bodies, tectum features also show variations grains. In character, A. retroflexus recorded highest view 26.3 μm lowest C. album 12.2 μm. Highest P/E index ratio S. (1.12) for D. muricta (0.94). thickness tragus 2.15 graecizans 0.78 maximum number pores as 32-36 muricata. Artificial keys constructed based on findings that reinforce importance micromorphological ultrastructural diversity It concluded descriptions morphotypes presented greatly contribute our understanding desert species identification.