Arizona Naturalists >>> Sycamore Gallery Flora >>> Nyctaginaceae >>> Mirabilis longiflora
Sweet Four O'Clock
Observed on a riparian stream terrace near Rio Rico in Santa Cruz Co., Arizona, USA. 1 August 2010.
FLOWERS: The very long tubular flowers are
white with conspicuous, port-wine colored stamen filaments. The flowers tend to
open in the late afternoon and remain open overnight till the following
morning. These flowers are pollinated by hawk moths, (Sphingidae), at night;
they're the only insect with such a long, slender proboscis to reach the nectar
in the base of the tube.
Nyctaginaceae -- Four O'Clock Family
The Flora of Arizona's Sycamore Canyons