Stems mostly grayish in color; sepals usually obtuse, without purple coloring, these deciduous sepals in fruit; petals are white to pale pink, five in number; stamens magenta are usually 10 (but may be fewer); flowers open at dusk; fruit are rounded, usually lumpy due to seeds pressing from inside, and not self dehiscent (requiring mechanical disturbance to open, and then valve immediately deciduous); seeds have raised concentric ridges.