9a Plant with vanilla-scented golden flowers whose latin name is said to have given rise to the name of the Plantagenet dynasty, according to tradition [5]
13a An edible part of a salad green whose bitter varieties include chicory, radicchio and winter purslane [4]
4d sheep's fleece woven unto yarn with heather and tweed varieties [4]
53d Flock of kept swans or, an activity such as ludo or Scrabble [4]