1 adjectives to describe syringas

Again he watched His loved syringa whitening by the door, And knew the catbird's welcome; in his walks Smiled on his tawny kinsmen of the elms Stealing his nuts; and in the ruined year Sat at his widowed hearthside with bent brows Leonine, frosty with the breath of time, And listened to the crooning of the wind

1 adjectives to describe  syringas