This is a great photo collection, excellent photos. An unfortunate common name for the plant ( Hybanthus monopetalus) as there is an orchid with the same name! ie Lady Slipper Orchid: this is the problem with common names. Good example is Arum maculatum
generally known as Lords & Ladies, a common plant in hedgerows in England. It has at least 60 common names. Details can be found in a book called "Lords & Ladies " by Cecil T Prime (A New Naturalist Book) published in1960 by Collins
London. It belongs to the Araceae, like the Giant flowering Amorphophallus titanium recently shown in David Attenboroughs TV series on Plants. One recently flowered on the Gold Coast.
Arum maculatum also shows the same phenomenon of a rise in temperature in the spadix during flowering. Starch from the plant's tubers was used to starch Elizabethan clothes, especially the collars.