Sonchus oleraceus -... en.wikipedia.org

American aster - Flora of... www.paenflowered.org

OregonFlora Sonchus... oregonflora.org

The "protologue" of Geblera... www.researchgate.net

World Plants: Plant List www.worldplants.de

Hieracium prenanthoides... luirig.altervista.org

Rough leaved hi-res stock... www.alamy.com

World Plants: Plant List www.worldplants.de

World Plants: Plant List www.worldplants.de

World Plants: Plant List www.worldplants.de

Cicerbita prenanthoides... powo.science.kew.org

Daisy species - Canberra &... canberra.naturemapr.org

Daisy species - Canberra &... canberra.naturemapr.org

World Plants: Plant List www.worldplants.de

World Plants: Plant List www.worldplants.de

Rough leaved hi-res stock... www.alamy.com

The "protologue" of Geblera... www.researchgate.net

Flora silvestre hi-res... www.alamy.com

Daisy species - Canberra &... canberra.naturemapr.org

Willemetia - Wikipedia, la... es.wikipedia.org