Are both Promenaea and Machaeranthera from North America?
Promenaea Promenaea is a genus of flowering plants from the orchid family, Orchidaceae. It contains 18 currently accepted species (including one that is apparently extinct), all endemic to Brazil.
Platanthera flava Platanthera flava, the palegreen orchid, is a species of pale-flowered orchid. It is native to eastern North America, from Texas east to Florida, north to Ontario, Quebec and Nova Scotia.