Rhaponticum repens
Videos
Rhaponticum repens, synonyms including Acroptilon repens and Leuzea repens, with the common name Russian knapweed, is a species of bushy rhizomatous perennial belonging to the family Asteraceae.
Acroptilon repens
Russian knapweed in Mashhad-Iran
Asteraceae
Videos
Asteraceae is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the
Rhaponticum repens
…including Acroptilon repens and Leuzea repens, with the common name Russian knapweed, is a species of bushy rhizomatous perennial belonging to the family Asteraceae. Russian knapweed is a deep-rooted long-lived perennial. Some stands have been in existence for 75 years. It forms dense colonies in cultivated fields…
Asteracea poster 3
A typical Asteraceae flower head, showing the (five) individual ray florets and the (approximately 16) disk florets of Bidens torta specimen
Discoid flowerheads of Delairea odorata
Dandelions on an alpine slope in Switzerland