catkins

例句:

• Willow catkins are fluttering in the air.
  柳絮在空中飞舞.
  
• A single branch may bear several catkins.
  一根枝条可着生几个花序.
  
• Several other conifers produce small male catkins.
  其它几种针叶树产生小雄花序.
  
• The flowers are in catkins, the sexes nearly always on different trees.
  来自M. Hadfield
• It has unusual light yellow, pendant-like, rounded flowers that look like catkins dripping from the reddish brown branches.
  来自THETIMES
• Pussy willow and white willow catkins can give you long stems to cut and they last well in water.
  来自THETIMES