Flora of the Sudan-Uganda border area east of the Nile. Catalogue of vascular plants, 1st part.

Copenhagen, Munksgaard, 1998. 4to. 389 pp.; three text illustrations showing maps of (parts of) Africa. Original printed wrappers. = A very uncommon study. The taxa covered are the pteridophytes, gymnosperms, and angiosperms (dycotyledons) orders Annonales to Asterales (orders numbered 9 to 63). Published on behalf of Det Kongelige Danske Videnskabernes Selskab (The Royal Danish Academy of Sciences and Letters), as Biologiske Skrifter 51:1. A second part, Vegetation and phytogeography was published in 2005 but is not included. According to the abstract of the latter, "This study deals with the vegetation and vascular plant flora of the mountain massifs and adjacent lowlands along the border between Uganda and die Sudan to the east of the Nile. The mountains of this area rise abruptly from the Nile Valley plains at 500-700 m., with crests reaching altitudes between 2000 and 3200 m., and consist of rocks of the crystalline basement complex. The rocks of the mountains are much older than the large volcanic highlands of Ethiopia and tropical East Africa (Uganda, Kenya and Tanzania), but the uplifting of the mountain massifs has taken place as part of the East African Rift Valley formation, the same process, which created the volcanic mountains. The three principal massifs dealt with here are the Imatong Mountains group, the Dongotona Mountains and the Didinga Mountains. The first volume of this work dealt with the geographical delimitation of the study area and history of exploration of the flora, and it included the first part of the catalogue (Pteridophyta to Asteraceae). The current volume deals with the remaining families (Gentianaceae to Poaceae), and contains general chapters on vegetation and biogeography. The vascular plant flora of the study area contains 110 species of ferns and fern allies, 4 species of gymnosperms and 2135 taxa (species, subspecies and varieties) of flowering plants". Cancelled stamp on title page. Otherwise a very good, clean copy.