Scrophulariaceae in the flora of Egypt. 1. Systematic revision of the indigenous taxa. Taeckholmia 19(2): 227-259. The indigenous taxa of Scrophulariaceae represented in the flora of Egypt were systematically revised. This revealed the presence of 50 species belonging to 16 genera, 8 tribes and 3 sub-families. Kickxia gracilis, K. pseudoscoparia, Scrophularia sinaica, Veronica scardica and V. rubrifolia are new records to the flora of this country.For each species, valid name, synonymes (if any), type, distribution (local and global) and selected specimens are given. A key for the genera of the family, keys for species belonging to genera with more than one species; and for the infra-specific taxa of polymorphic species are provided
Systematic relationships in the Malvaceae s.s. and allied families were studied on the basis of numerical analysis. 103 macro-and micro morphological attributes including vegetative parts, pollen grains and seeds of 64 taxa belonging to 32 genera of Malvaceae s.s. and allied families (Sterculiaceae, Tiliaceae, Bombacaceae) were scored and the UPGMA clustering analysis was applied to investigate the phenetic relationships and to clarify the circumscription. Four main clusters are recognized viz. Sterculiaceae s.s. cluster, Tiliaceae-Exemplars of Strerculiaceae cluster, Malvaceae s.s. cluster and Bombacaceae s.s.-Exemplars of Sterculiaceae and Malvaceae cluster. The results delimited Sterculiaceae s.s. and Tiliaceae s.s. to containing the genera previously included in tribes Sterculieae and Tilieae respectively; also confirmed and verified the segregation of Byttnerioideae of Sterculiaceae s.l. and Grewioideae of Tiliaceae s.l. to be treated as distinct families Byttneriaceae and Spermanniaceae respectively. Our analysis recommended the treatment of subfamilies Dombeyoideae, Bombacoideae and Malvoideae of Malvaceae s.l. as distinct families: Dombeyaceae, Bombacaceae s.s. and Malvaceae s.s. and the final placement of Gossypium and Hibiscus in either Malvaceae or Bombacaceae is uncertain, as well as the circumscription of Pterospermum is obscure thus further study is necessary for these genera.
Egyptian Journal of Botany http://ejbo.journals.ekb.eg/ Review 1 T HIS STUDY aimed to characterize the external morphology of achenes of the 74 taxa belonging to 51 genera and four subfamilies of Asteraceae from the Northwestern Mediterranean coast of Egypt. By using light microscopy, 26 quantitative and qualitative morphological characters were recorded. Among the studied taxa, achene symmetry, hairiness, surface topography, hilum position, presence or absence of pappus and pappus type were found significant diagnostic characters for delimiting the taxa. Two main groups were identified based on the presence or absence of hardened fruiting involucre. Four types and four subtypes were recognized: (1) Achene di-or trimorphic per capitulum, (2) Achene monomorphic and lacking pappus, (3) Achene monomorphic, with coroniform or auriculate pappus, (4) Achene monomorphic, with pappus. A description, photographs and identification keys were provided to assist in identification. Despite the taxonomic significance of achene exomorphology characters on the generic and specific level for the recognition of the different studied taxa of Asteraceae, no mutual link was shown between the taxonomic division of the family into subfamilies and tribes except for few cases.
Updated 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.
Rosa arabica is endemic to the high mountain area of the St. Catherine Protectorate, Southern Sinai, Egypt. It has been listed as Critically Endangered in the IUCN Red Plant List.The present study aimed to provide detailed morphological and anatomical characters of the endemic Rosa arabica by using light and scanning electron microscopy in order to expand knowledge of its taxonomy. The present study revealed the presence of three types of trichomes: simple unicellular, glandular unicellular stalked and glandular multicellular multiseriate. Anomocytic stomata, occasionally hemiparacytic and actinocytic were observed mostly on abaxial surface. Epidermal cells were smooth, with dispersed wax granules and stomata slightly raised with outer stomatal rim. Druses were also reported in pith and cortex of stem and petiole. Achene micromorphology showed scalariform pattern with anastomosed raised anticlinal walls and depressed periclinal walls.These data are presented here for the first time and their taxonomic values are discussed.
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