hornwort
/ˈhɔːnwɜːt/noun
1- a submerged aquatic plant with narrow forked leaves that become translucent and horny as they age, occurring worldwide角苔。
1.1
- Family Ceratophyllaceae and genus Ceratophyllum: two or more species, in particular C. demersum.金鱼藻科, 金鱼藻属：两种或更多, 尤指金鱼藻（拉丁名 C. demersum）。