Complex sentence: Some plants described as subshrubs are only weakly woody and some persist for only for a few years; others however, such as "Oldenburgia paradoxa" live indefinitely, rooted in rocky cracks.
Split into simpler sentences: Some plants described as subshrubs are only weakly woody and some persist for only for a few years. Others however, such as "Oldenburgia paradoxa" live indefinitely, rooted in rocky cracks.