4 Queens of the Night! Like rockets poised to launch (at midnight).

This is interesting... four keng hua (Epiphyllum oxypetalum) buds on one leaf! They will bloom around midnight soon (but not tonight)...  

Night shot, Nov 23

Daytime shot, Nov 24

The keng hua is also known as the "Queen of the Night". I found this New Straits Times article that sheds more light on this unusual cactus:

http://news.google.com/newspapers?nid=1309&dat=19940625&id=WiJOAAAAIBAJ&sjid=khMEAAAAIBAJ&pg=6794,1769105