Taxon - Links and literature
C. Ulloa et al. (2017): An integrated assessment of the vascular plant species of the Americas, Science. 358. 1614-1617 [as Oonopsis engelmannii (A. Gray) Greene]Data retrieved on: 1 April 2020
C. Ulloa et al. (2017): An integrated assessment of the vascular plant species of the Americas, Science. 358. 1614-1617 [as Oonopsis engelmannii (A. Gray) Greene]