monocarpic

{ } a. [ Mono- + Gr. &unr_; fruit: cf. F. monocarpe. ] (Bot.) Bearing fruit but once, and dying after fructification, as beans, maize, mustard, etc. [ 1913 Webster ]

☞ Annual and biennual herbs are monocarpic, so also some plants of longer duration, as the century plant. [ 1913 Webster ]