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Abstract Summary Plants of Family Aizoaceae are group of dicot plants called ice plants. In Egypt there are ten species belong to six genera. In this study, we studied nine species only namely: Mesembryanthemum nodiflorum, Mesembryanthemum crystallinum, Mesembryanthemum forskahlii, Aizoon canariense, Aizoon hispanicum, Sesuvium sesuvioides, Trianthema portulacastrum, Trianthema crystalline, and Zaleya pentandra. These species are collected from the in the different phytogeographical regions of Egypt, Cairo Herbarium (CAI) and Damietta Herbarium. The present distribution of the studied species is shown on drawn maps. Morhological characters of the nine species are compared and statistically analysed for plant leaves and flower characters The pollen grains and seeds were acetolized for light microscope (LM) and scanning electron microscopy (SEM). Also, Seed protein was analyzed through slab type SDS-PAGE using 11% polyacrylamide gel of some species of family Aizoaceae for assessment of taxonomic value. Herbarium voucher specimens are kept at the Department of Botany, Faculty of Science Damietta University, Egypt. Results of this study indicate previously undescribed sets of relationships within Family Aizoceae in Egypt based on types of pollen. The pollen type is 94 euripalynous. On the basis of the structure of the exine, four types were recognized: Scabrate, Spinulose and tubiliferous- punctate, punctate-striate and sparcely-punctate. The banding pattern of protein peptides in M. crystallinum, M. nodiflorum, M. forskalli, S. sesvoides and A. canariensis showed 16 protein subunits and out of these 15 were polymorphic. Variability in intensity was observed in some bands that indicated the quantity of protein peptides cumulating at a particular molecular weight. Cluster analysis based on SDS-PAGE profiles revealed the similarity between the plants, which indicated that the highest similarity was found between M. crystallinum and A. canariensis at 97.14% similarity level, also high similarity was present between M. nodiflorum and S. sesvoides at 96.92% similarity level. The minimum similarity was found between M. forskahlii and both of M. nodiflorum and S. sesvoides at 94.36% similarity level. |