Facultative; occuring optionally in response to circumstances, rather than by nature.
Agamospermic; capable of producing seeds from unfertilized ovules.
Polygamic; containing more than two homologous sets of chromosomes.
Compilospecies; genetically aggresive species that can incorporate genes of a related species and may subsume that species, rendering it extinct.
A little like the botany version of a kitchen remodel.
Note that Spiranthes magnicamporum is no longer known in Pennsylvania. Was it subsumed? At Ives Fen S. cernua and another related species were found in 1979. Now, only S. cernua can be found in the area where the other occurred. Almost certainly subsumed!