clover growing in a small uro in the trunk of a birch tree

ballysallagh bark betula betulaceae birch botanical botany cairn clover conservation county craigantlet deciduous dubium feet flora flower forest forestry found green ground growing head herbaceous hills ireland leafed leaves national native nature northern oxalis pendula plant recreation shamrock silver small sourgrass stricta tree trees trifolium trunk uro weed wild wood woodland woodsorrel