Cairo University Herbarium (CAI)Taeckholmia1110-741342120220712Taxonomic significance of seed characters and SDS-PAGE analysis in the classification of Ericaceae11124890710.21608/taec.2022.138652.1037ENLamiaaF. ShalabiAin Shams University, Faculty of Education, Biology Department0000-0002-9554-251XNagwanHamdyAin Shams University, Faculty of Education, Biology DepartmentEtharHusseinAin Shams University, Faculty of Education, Biology Department0000-0002-3332-5819Journal Article20220516Classification of nineteen taxa, belong to ten genera of family Ericaceae are studied. The study based on macro-, micro-morphological characters of seeds and SDS-PAGE analysis techniques. The phenetic relationships of the studied taxa were expressed by UPGMA-clustering method using NTSYS-pc 2.2 software. The UPGMA phenogram based on 47 characters revealed the separation of two major clusters (A) and (B). Group (A) subdivided into two sub ordinary clusters (AC), expressed subfamily Vaccinoideae, and (AD) which expressed together with main group (B) subfamily Ericoideae. The studied genera are distributed equally between these two subfamilies. Vaccinoideae is represented by five tribes: Vaccinieae, Gaultherieae, Oxydendreae, Lyonieae and Andromedeae. Ericoideae is separated as two clades representing two tribes: (AD) Phyllodoceae and (B) Rhodoreae. The produced hierarchical taxonomic arrangement typically matches the traditional classifications of the family. Clustering of Menziesia pilosa with Rhododendron menziesii in near distance with all Rhododendron taxa confirmed the placement of both genera under tribe Rhodoreae, and supports the transfer of genus Menziesia to be nested in Rhododendron as recommended by some recent cladistics analyses of DNA data.https://taec.journals.ekb.eg/article_248907_4dc4dea20a46e327899c94d950ee42b4.pdfCairo University Herbarium (CAI)Taeckholmia1110-741342120220712Contribution to the Flora of Egypt: Taxonomic and Nomenclature changes122624896410.21608/taec.2022.142236.1039ENHasnaa AhmedHosniPlant & Micribiology Department, Faculty of Science, Cairo University0000-0001-7609-9383Eman MahmoudShamsoBotany & Microbiology Department, Faculty of Science, Cairo University, Giza 12612, Egypt0000-0002-0068-0224Journal Article20220601Updated nomenclatural treatment of the native and naturalized vascular flora of Egypt is presented. It was compiled by referring to several information sources such as existing literature, relevant online database, and herbaria collections. Recent molecular phylogenetics have resulted in the identification of new families. All families, genera, and species have been updated in their circumscription and nomenclature based on the classification of the Angiosperm Phylogeny Group (APG III & APG IV). The updated nomenclature and current taxonomic status of 288 taxa (including 34 subspecies, and 22 varieties) belonging to 169 genera and 49 families are provided. The nomenclature changes of all taxa are on the basis of the most recent taxonomic treatments which combined genera previously included in other families, or even in new families. Only the specific and infraspecific taxa that are previously mentioned in the latest checklist and now treated as synonyms are reported. Twenty-two families are changed to up-to-date names and become synonyms of other families. Seven new family names are added to the Flora of Egypt namely: Salveniaceae, Gisekiaceae Hypericaceae, Lophiocarpaceae, Limeaceae, Phyllanthaceae, Linderniaceae, and Phrymaceae; in addition, Nanorrhinum is a new generic name of family Plantaginaceae.https://taec.journals.ekb.eg/article_248964_8db4d0e95ad7186c3d39ca88dec6200d.pdfCairo University Herbarium (CAI)Taeckholmia1110-741342120220701Pollen grain diversity and application in taxonomy and evolution274225821310.21608/taec.2022.258213ENWafaa KamalTaiaFaculty of Science, Alexandria University0000-0003-4581-676XJournal Article20220906<strong>Background and aims:</strong><strong> </strong><strong>Pollen grains, the male gametes within the higher plants, have great diversity in morphological characters. In this review, the history of the pollen morphological studies, the applications and importance in plant taxonomy discussed. </strong><strong>Methods. Literature concerning the importance of studying pollen morphological characters in various ways viz., identification, classification and grouping of plants. Key Results. The survey of the recent literature revealed that pollen grain characters and composition have essential role in plant taxonomy, identification and evolution. Conclusion. Pollen morphological studies considered an important tool in taxonomical studies and solve many obscure problems in taxonomical confusions when used in precise way. </strong>https://taec.journals.ekb.eg/article_258213_07e5a78412973f15b478038ea9d3f733.pdfCairo University Herbarium (CAI)Taeckholmia1110-741342120221125Floristic Studies in Suez Canal Region with Seventeen New Records to the Area435827122510.21608/taec.2022.168965.1040ENSara M.HassanenBotany & Microbiology Department, Faculty of Science, Suez Canal University, Ismailia-EgyptElsayeda M.Gamal EldinBotany & Microbiology Department, Faculty of Science, Suez Canal University, Ismailia-EgyptWafaa M.KamelBotany & Microbiology Department, Faculty of Science, Suez Canal University, Ismailia-EgyptYasmin M.HassanBotany &Microbiology Department, Faculty of Science, Suez Canal University, Ismailia-Egypt0009-0000-4536-1385Journal Article20221015The present study provides a detailed flora composition and soil attributes of Suez Canal region. This region was represented in Ismailia-PortSaïd highway, Ismailia city and Ismailia-Suez highway which wasn’t surveyed before as a whole region. The species collection was preformed seasonally from 2020 till 2022. The investigated area comprised of a wide range of habitats namely, waste land, cultivated land, irrigated areas, desert land, salt marshes, edge of cultivation and canal bank. A total of 190 species were recorded in the study area. They include 24 sub-species and 14 varieties belonging to 127 genera and 39 families. The most species-rich families were represented by Poaceae (36 species), Amarnthaceae (26 species), Asteraceae (18 species), Brassicaceae (12 species) and Fabaceae (10 species). Therophytes were the most dominate life-form in the study area represented by 58.5 percent, followed by chamaephytes (20.5%), hemicryptophytes (7.8%), cryptophytes (7.89%), then phanerophytes (4.7%) and parasites 0.5%. This study revealed seventeen species as new records to the flora of the study area. Out of these six species are added as new records to the flora of the Mediterranean region, Eastern desert and Isthmic desert.https://taec.journals.ekb.eg/article_271225_484da0d80f50457a55f7129c997b8fad.pdfCairo University Herbarium (CAI)Taeckholmia1110-741342120220701Paleoclimates of the Cenozoic of Egypt: Evidence from Fossil Plants596427208710.21608/taec.2022.170048.1041ENNermeen AdelZiadaBotany Department, Faculty of Science, Ain Shams University, Cairo, Egypt.0000-0002-3703-8534Wagieh El-SayedEl-SaadawiFaculty of Science, Ain Shams UniversityJournal Article20221021Paleoclimatology is the study and reconstruction of past climates for which direct measurements were not taken. Paleoclimatologists, paleobotanists and geologists use a number of proxies to study the past climatic changes and to understand the natural variation and evolution of the current situation; as climate change in the 21st century has been regarded as a threatening issue.<br /><br />Paleoclimate interpretation using fossil plants is one of the most important contributions of paleobotany to earth sciences, as they are considered as reliable indicators of long-term climatic changes, especially during the Cenozoic era; which encompassed a wide range of climates.<br /><br />Research work on the fossil flora of Egypt has started 150 years ago; with paleoclimate inferences being displayed in the different references. Thus, this review collates all the Egyptian paleobotanical and paleopalynological data to reconstruct the Cenozoic climate in Egypt. Spanning through the epochs of the Cenozoic era; woods, leaves, fruits, seeds, pollen and spores have been recorded from different sites. Apparently, the paleoenvironments differed but a tropical to subtropical climate was prevalent during the Cenozoic in Egypt. However, the usage of different proxies, other than fossil plants will reveal a better picture of the past climate.https://taec.journals.ekb.eg/article_272087_a7aff9037d6409f5d596b16a754eec1b.pdf