Contribution to the biosystematic study of liverworts (Marchantiophyta) of Senegal: Case of Senegaleses herbaria and check-lists

The aim of this work is to contribute to a better knowledge of liverworts in the herbaria of Senegal in order to provide basic knowledge for a better sustainable management. This study is carried out in the firstly in the herbaria of the University Cheikh Anta Diop of Dakar/Senegal: the herbarium of the Herbarium of the Institut Fondamental d'Afrique Noire (IFAN UCAD) and the herbarium DAKAR of the Department of Plant Biology of the Faculty of Sciences and Techniques. Secondly, a consultation of different checklists and databases was conducted to collect more information. This research work on the flora of liverworts is rich with nearly 39 species divided into 24 genera and 13 families. The order Jungermanniales is dominant in terms of families and the Porellales Jubulineae in terms of genera and species. The family Lejeuneaceae is in the majority in this flora before the families Ricciaceae, Plagiochilaceae and Metzgeriaceae. These results are important for the conservation of the environment and the development of the plant biodiversity of Senegal.

Contribution to the biosystematic study of carpophoric basidiomycetes (higher fungi) in the Dakar region (Senegal)

In Senegal, fungi constitute a large and diverse systematic group. However, despite their numerous food and pharmacological potential, few studies have been devoted to this group, particularly carpophore fungi. This work is a contribution to the knowledge of macromycetes in Senegal. It specifically proposes to determine the structure of the fungi on the prospected sites and to propose identification tools. Inventories were made at four (4) sites: two sites in Cheikh Anta DIOP University of Dakar (Botanical Garden, Faculty of Science and Technology and that of Faculty of Medicine), the Forest Park of Hann and the classified forest of Mbao. The identification and description of the samples were carried out based on macroscopic and ecological characteristics. This methodology allowed us to identify (15) morphotypes distributed in 2 subclasses of the Basidiomycetes class. They belong to 5 orders (Agaricales, Pluteales, Trichlomatales, Phallales, Gasterales), 7 families (Agaricaceae, Lepiotaceae, Pluteaceae, Marasmiaceae, Termitomycetaceae, Phallaceae, Sclerodermataceae) and 8 genera. Among these morphotypes, four (4) are identified down to the species level (Phallus roseus, Podaxis pistillaris, Micropsalliota cf elata and Scleroderma auriculatum) and 11 down to the genus. In this fungi group, the genus Termitomyces dominates with five (5) species, followed by the genus Volvaria with three (3) species. This work made it possible to bring out the common and differential characters between the species. It then appeared that the mode of insertion of the foot is the only characteristic common to all species. In addition, the identification of discriminating characteristics made it possible to develop a key for determining all the species inventoried.

Biosystematic Study in Some Dracocephalum Species (Lamiaceae) Based on Morphology and Anatomy in Iran

The genus Dracocephalum L. (Lamiaceae) with about 60 to 70 species is a genus in the sub-tribe Nepetinae, tribe Mentheae of Lamiaceae family, native to temperate regions of the Northern Hemisphere. They are mostly perennial herbs, and rarely annual. Flora Iranica reports 8 Dracocephalum species and the Flora of Iran reports 10 Dracocephalum species in Iran out of which, 4 species are endemic. We collected 7 Dracocephalum species and studied species delimitation and species relationship by morphometric and anatomic results. The species were efficiently delimited by morphological and anatomical characters. Morphological and anatomical characters revealed closer affinity between D. moldavica and D. subcapitatum and D. thymiflorum were placed with distance from these species.

A Biosystematic study of Elymus charkeviczii, E. mutabilis and E. subfibrosus from the Peninsula Kamchatka

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