Complex sentence: Sunderland, MA There is no characteristic which is found in all mature mesangiosperms but which is not found in any of the basal angiosperms, but the mesangiosperms are recognizable in the earliest stage of embryonic development.
Split into simpler sentences: Sunderland, MA There is no characteristic which is found in all mature mesangiosperms but which is not found in any of the basal angiosperms. Nevertheless, the mesangiosperms are recognizable in the earliest stage of embryonic development.