Arachnothryx Leucophylla 银叶郎德木, 巴拿马玫瑰 Family name :Rubiaceae Synonyms : Rondeletia leucophylla, Hedyotis leucophylla, Arachnothryx elongata, Arachnothryx leptodictya, Bouvardia discolor Common name : Bush Pentas, Panama Rose, Rondeletia