any of several ferns of the genus Cystopteris, having pinnate leaves and growing in rocky areas.
[ 1820-30; so called from the bladderlike indusium ]
any of several ferns of the genus Cystopteris, having pinnate leaves and growing in rocky areas.
[ 1820-30; so called from the bladderlike indusium ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012