资料来源 : Webster's Revised Unabridged Dictionary (1913)

Chara \Cha"ra\, n. [NL., of uncertain origin.] (Bot.)
   A genus of flowerless plants, having articulated stems and
   whorled branches. They flourish in wet places.

资料来源 : WordNet®

Chara
     n : green algae common in freshwater lakes of limestone
         districts [syn: {genus Chara}]