Paphiopedilum x siamense, no date on slide. Believed to be a natural hybrid, described in 1896.
Paphiopedilum x siamense, October 1970, roll 197010H3 slide 10. Believed to be a natural hybrid, described in 1896.
Paphiopedilum x siamense. December 1971, roll 197112H4 slide 18. Believed to be a natural hybrid, described in 1896.
