|Desert Night-Blooming Cereus (Peniocereus greggii)|
DESCRIPTION: Also Cereus greggii. Up to maximum height of 8' when supported by other plants, but usually shorter and may sprawl. Stem usually slender (less than 1" diameter), and blue-green in color. Spines dark, with 11-13 per areole common. Flowers are white to 4.5" wide, with pointed sepals and petals.
NATURAL HISTORY: Flowers bloom in summer with each flower open only for one night. Plant is hard to see because its stems often occur within other plants and look just like dead branches. The desert night-blooming cereus is a root succulent, possessing a tuberous root, commonly weighing between 5 and 15 pounds.