($400 CDN cash)

• Best paper or series of papers published within the previous two years in a journal or book by a member of IAB.
• Given every two years at the IAB meetings.
• Selection Committee chaired by Vice President Number 2, with three members appointed by the IAB Council at each IAB meeting.

Recipients:
Hélène Bischler 1995,
Steven P. Churchill & Edgar Linares 1997,
William R. Buck 1999,
Jean Paton 2002,
Hans Kruijer 2004,
Jonathan Shaw 2005,
Bill & Nancy Malcolm 2007,
Neil E. Bell, Dietmar Quandt, Terry J. O’Brien, & Angela E. Newton 2009.
Janice Glime for Bryophyte Ecology ebook, 2011-2013.