Hamamelis mollis - Chinese Witch Hazel. This stunning little tree greets visitors arriving at the Main Entrance on Clarkehouse Road; others should pop through the archway to admire it, a cheering sight on a wintry day.  The golden-yellow curled petals are held in maroon-red calyces, in clusters of tassels all over the bare twigs.  They are not damaged by frost or snow but the scent is only enjoyed at warmer temperatures.  (However the gorgeous perfume of the adjacent Sarcococca pervades the air no matter how cold it is.)