INNEHÅLLSFÖRTECKNING. NILS SVEDELIUS: Are the Haplobiontic Florideae to be Considered Reduced Types? B. KULLENBERG: On the Scents and Colours of Ophrys Flowers and Their Specific Pollinators among the Aculeate Hymenoptera. L. FRIES: Studies in the Physiology of Coprinus. II. Influence of pH, Metal Factors and Temperature. G. BERGGREN: Växtmaterial från träskboplatsen i Dagsmosse. B. BOIVIN: Stellaria Sectio Umbellatae Schischkin (Caryophyllaceae). O. RUNE & O. I. RÖNNING: Antennaria nordhagiana nova species. B. STRÖMBERG: The Embryo-sac Development of the Genus Freycinetia. G. ERDTMAN: ”LO-Analysis” and ”Welcker’s Rule”, a Centenary. H. J. BRODIE: The Structure and Function of the Funiculus of the Nidulariaceae. M. RYBERG: Kolsö, ett sö...