Houston's Whitebeam
... that the single known specimen of Houston's Whitebeam grows on a cliff in North Somerset and cannot be accessed without ropes?
... that the single known specimen of <b id="mwEJE"><a class="mw-redirect" href="./Sorbus_x_houstoniae" id="mwEJI" rel="mw:WikiLink" title="Sorbus x houstoniae">Houston's Whitebeam</a></b> grows on a cliff in <a href="./North_Somerset" id="mwEJM" rel="mw:WikiLink" title="North Somerset">North Somerset</a> and cannot be accessed without ropes?