Issue 4

Abstract

C. J. Humphries, B. G. Murray, G. Bocquet och K. Vasudevan: Chromosome numbers of phanerogams from Morocco and Algeria Hannelore Håkansson: Achnanthes fogedii, a new subfossil diatom from S Sweden Signe Frederiksen: Festuca brevissima Jurtz. in Alaska Lars E. Kers: Tulostoma niveum sp. nov. (Gasteromycetes), described from Sweden Lars E. Kers: Elaphomyces maculatus found in Sweden Per-Olof Karlström: Epidermal leaf structures in species of Strobilantheae and Petalidieae (Acanthaceae) Anna-Elise Torkelsen: Tremella juniperina, a fungicolous jelly fungus M. Nabil El Hadidi: The genus Zygophyllum in Egypt Vivi Täckholms biological symposium Synopses of lectures prepared for a symposium held in Lund, Sweden, in August 1978 Kåre Bremer: Oreoleysera and Antithrixia, new and old South African genera of the Compositae Mats Thulin: Cyphia (Lobeliaceae) in tropical Africa C. C. J. Culvenor: Pyrrolizidine alkaloids - occurrence and systematic importance in angiosperms Lennart Ahlstrand: Embryology of Ursinia (Compositae) Hans Øllegaard: New species of Taraxacum from Denmark Bengt Jonsell: Linnaeus's views on plant classification and evolution