Section: Apodanthi
N. rupicola
Section: Apodanthi
N. rupicola subsp. watieri
Fl. 42mm wide, creamy lemon yellow; perianth segments 18mm long, broadly ovate, blunt, prominently mucronate, spreading, plane, with margins wavy, overlapping a quarter; the inner segments narrower, less prominently mucronate; corona 6mm long, bowl-shaped, smooth, mouth straight, wavy and three-lobed, with rim entire.