The previous page is sending you to https://bioone.org/journals/madro%C3%B1o/volume-66/issue-4/0024-9637-66.4.142/CARDUUS-CINEREUS-ASTERACEAE--NEW-TO-NORTH-AMERICA/10.3120/0024-9637-66.4.142.full.

 If you do not want to visit that page, you can return to the previous page.