(Plaque and invitation to present opening address at next IAB meeting)
- Award to recognize one IAB member who has made important contributions to bryology, within the first 25 years of their career (dated from their first bryological publication).
- Award can only be received once.
- Given at every IAB meeting not held in conjunction with The International Botanical Congress (two of the three meetings every six years).
- Selection Committee chaired by Vice President Number 1, with two members appointed by the IAB Council at each IAB meeting not associated with the International Botanical Congress.
Jan-Peter Frahm 1995,
Timo Koponen 1997,
William R. Buck 2002,
Benito C. Tan 2004,
Jeffrey G. Duckett 2007,
Jonathan Shaw 2009
Karen Renzaglia 2011,
Bernard Goffinet 2013.