Cover The cone-like inflorescence of the basal monocot Acorus calamus, comprises many
small flowers, and is accompanied by a peculiar leaf (spathe). Refined analyses of EST data
generated for species holding key positions in the angiosperm phylogeny provide evidence
for genome-wide duplication events throughout the history of flowering plants. (Photograph
by Matyas Buzgo. [For details, see Cui et al., pp. 738-749.])