A review of the evolutionary and ecological significance of lever-like stamens
杠杆状雄蕊及其进化生态学意义

We review the structural diversity and evolutionary significance of a type of highly modified stamen that is lever-like or spurred and can function as lever during pollination. Evolutionary changes of the androecium in stamen number and morphology often take place during floral evolution, shifting from pollen production to new functions. Lever-like stamens have been described in several subfamilies of Lamiaceae and six genera of Zingiberaceae. There are two types. One is derived from connective elongation a...