Children (12 direct children, 13 direct and indirect children):
Epipogium aphyllum
(tree size 1)
Ghost orchid
Epipogium japonicum
Epipogium roseum
Ghost orchid
Epipogium indicum
Epipogium dentilabellum
Epipogium nutans
Epipogium poneranthum
Epipogium sinicum
Epipogium tuberosum
Epipogium meridianum
Epipogium kentingense
Epipogium guilfoylii