anthesis
asteraceae
belarus flora
black background
botanical illustration
botanical science
botany
capitulum
closeup
compositae
earth apple
floret
flower
focus stacking
head
helianthus
helianthus tuberosus
involucral bract
involucre
jerusalem artichoke
lateral view
macro
nature
pedicel
peduncle
phyllary
plants
ray floret
sunchoke
sunroot
synflorescence
topinambur
virtual herbarium
wild sunflower