Creu Casas i Sicart, Professor Emeritus at the Autonomous University of Barcelona, Catalonia, and a member of the Insti­tute of Catalan Studies (IEC) since 1978, died at the advanced yet still active age of 94 in Bellaterra on 20 May 2007, after a brief illness. She was unquestionably the most prominent bota­nist in the field of bryological research (mosses, liverworts, and hornworts) covering the entire Iberian Peninsula and Balearic Islands in the past 50 years. She also served as the president (1980-1982) of one of the most prestigious affiliates of our in­ stitute, the Catalan Institution of Natural History