barb
biology
blossom
botany
branch
bristle
bud
cactus
cardo
cardo mariano
cardoon
closeup
flora
flower
focus
herb
herbal
leaf
macro
magenta
milk thistle
natural
nature
needle
part
pistil
plant
pollen
prick
pricker
purple
silybum marianum
spike
spiked
stem
summer
thistle
thorn
twig
uncultivated
weed
yellow