caox2_001_lhp_SteveHurst-USDA-NRCS-PLANTS-Database

Jewel distaff thistle (photo by Steve Hurst, hosted by the USDA-NRCS PLANTS Database)

Jewel distaff thistle (photo by Steve Hurst, hosted by the USDA-NRCS PLANTS Database)

Jewel distaff thistle (Carthamus oxyacantha)
Photo by Steve Hurst, hosted by the USDA-NRCS PLANTS Database

USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 19 July 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.