Mirabilis coccinea, the scarlet four o'clock, is a spring wildflower native to the southwestern United States and northwestern Mexico. The plant grows to two feet with deep red flowers which open at night. The plant can be found on washes, plains, and rocky slopes. References Mojave Desert Wildflowers, Jon Mark Stewart, 1998, pg. 116 External links Jepson Manual Treatment Photo gallery Night-blooming plants coccinea North American desert flora