You're right xstitcher, these Nature subjects can become very interesting when one starts 'digging'.
COPIED FROM HOMEGUIDES.....
//All flowers known as night blooming cereus bear large, fragrant flowers about 6 inches in diameter; the creamy-white blooms have many petals and appear atop a long tube, about 6 inches long. The flower center contains several yellow stamens that are exposed when the flowers open at dusk and may not be in full bloom until after midnight. These blooms quickly wither within an hour or so of sunrise and do not reopen.
Bats and Moths Attraction
Night blooming flowers, like night blooming cereus, are white and reflect the moonlight, making them glow and attract potential pollinators. The night-bloomers generally emit a strong sent that attracts the moths and bats that feed on their nectar. Bats, like the pallid bat, also feed on insects, as well as nectar. While these bats act as pollinators, they also eat mosquitoes, up to 600 an hour.//
We know that bats have very sensitive antennae that can detect other moth's pheromones from miles away, so the fragrant stamens should be no problem to locate.