geophyte
/ˈdʒiːə(ʊ)fʌɪt/Botany
noun
A perennial plant which propagates by means of underground buds or has an underground storage organ such as a bulb, corm, or rhizome.
Origin
Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From geo- + -phyte, after German Geophyt.