rhizocarpous

[ rahy-zoh-kahr-puh s ]
/ ˌraɪ zoʊˈkɑr pəs /

adjective Botany.

having the root perennial but the stem annual, as perennial herbs.
Also rhi·zo·car·pic [rahy-zoh-kahr-pik] /ˌraɪ zoʊˈkɑr pɪk/.

Origin of rhizocarpous

First recorded in 1825–35; rhizo- + -carpous

British Dictionary definitions for rhizocarpous

rhizocarpous
/ (ˌraɪzəʊˈkɑːpəs) /

adjective

(of plants) producing subterranean flowers and fruit
(of perennial plants) having roots that persist throughout the year but stems and leaves that wither at the end of the growing season