Asteraceae

Rothrock's knapweed

Plectocephalus rothrockii (Greenm.) D.J.N.Hind

Family: Asteraceae
Genus: Plectocephalus

Pet and kid safety: not checked yet. Check pet-safe plants

Rothrock's knapweed: Plectocephalus rothrockii — Photo: Alex Lomas, CC BY 2.0, from Wikimedia Commons

Is yours looking unwell? Scan your plant — free

Common names

By language (1)

English: Rothrock's knapweed

Synonyms

Centaurea grandiflora Moc. & Sessé ex DC.
Centaurea rothrockii Greenm.

Photos

Photo: Alex Lomas, CC BY 2.0, from Wikimedia Commons

More in Plectocephalus

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.