Mammillaria macdougallii Flat Cactus
CACTUS. Disc-shaped, with dark green tubercles. Usually
nearly flat at ground level. After long rainy periods, may swell
to a shallow dome shape. Flowers light pink to white, with pink stripes,
blooming in April. Fruits bright red. Rocky ridgetops and gentle
slopes in desert grassland. Occasional nearly throughout the Empires
except at the lowest elevations. Formerly M. heyderi var. macdougallii.
Plants from the Empires and Las Cienegas NCA have pink flowers, while those
from Mt. Fagan and the Santa Rita Mts. bajada, east of Davidson Canyon,
typically have yellower flowers.
FAMILY: Cactus Family (Cactaceae)