What is 夜来香 in the song by Teresa Teng?
the book 小山畫譜 has an entry "夜來香":


  藤本﹒植必用架蔓延環繞﹒葉長而末圓﹒花一叢百朶﹒五出﹒色綠微黄﹒蒂托管有柄﹒開亦下垂﹒日落則香氣襲人﹒六七月開




in the 5 wiki entries, only the centrum nocturnum (夜香木)  matched the above description ("花一叢百朶" "色綠微黄" "開亦下垂")



so, i would suggest option 1 (centrum nocturnal) as the answer.