![](http://www.alamy.com/thumbs/6/FECE7AE6-8F48-47FF-87D6-B68B29B03F2D/2ACFY7H.jpg)
Knapweed (Centaurea macrocephala) in flower.
Size: 3534px × 5315px
Photo credit: © BRIAN GADSBY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: angiosperms, biological, biology, botanical, botany, bright, centaurea, close, close-, flora, flowering, flowers, foliage, green, horticultural, horticulture, knapweed, leaf, leaves, macrocephala, nature, perennial, petals, plant, single, yellow