thallus
aesculus
backdrop
backgrounds
bark
botany
brown
chestnut
closeup
conker
cork
crack
crackled
detail
dry
fissure
foliose
forest
gray
green
grey
hippocastanum
horse
irregular
leafy
lichen
lime
lumber
macro
material
mint
nature
outdoors
parietina
pattern
peel
plant
relief
rough
rugged
rustic
scabrous
stem
surface
texture
tree
uneven
wood
woodland
xanthoria
yellow