Most
Thismia species are threatened with
extinction and many species are only known from very few collections. For instance, the
IUCN conservation status of
Thismia melanomitra is Vulnerable (VU),
Thismia malayana is categorized as Vulnerable (VU),
Thismia kobensis, which was previously believed to be extinct, is now categorized as Critically Endangered (CR), and
Thismia americana is believed to be possibly extinct. ==Ecology==