Stephanomeria spinosa... www.calflora.org

CalPhotos: Stephanomeria... calphotos.berkeley.edu

Stephanomeria spinosa Thorn... pfaf.org

Stephanomeria spinosa Thorn... pfaf.org

Stephanomeria - Wikipedia en.wikipedia.org

SEINet Portal Network -... swbiodiversity.org

Spiny Skeletonweed:... science.halleyhosting.com

Spiny Skeletonweed:... science.halleyhosting.com

chicory-leaved-stephanomeri... www.alamy.com

Pleiacanthus - Wikipedia en.wikipedia.org

SEINet Portal Network -... swbiodiversity.org

SEINet Portal Network -... swbiodiversity.org

Spiny Skeletonweed:... science.halleyhosting.com

USDA Plants Database plants.sc.egov.usda.gov

Spiny Skeletonweed:... science.halleyhosting.com

Pleiacanthus spinosus... powo.science.kew.org

USDA Plants Database plants.usda.gov

2021.06.14_10.10.36_IMG_161... flickr.com

Spiny Skeletonweed:... science.halleyhosting.com

2021.09.27_14.41.52_IMG_445... flickr.com