The above-ground stems of D. rugelii live only one or two years, but the stout taproots are apparently long-lived (02,03).
(The above-ground stems of D.; rugelii live; T:only one or two years) (the stout taproots; are; apparently long-lived (02,03)
The above-ground stems of D. the stout taproots
rugelii live are
T:only one or two years
apparently long-lived (02,03