Mammillaria heyderi var. macdougalii

Common Name: Cream Cactus, Macdougalˊs Nipple Cactus
Oˊodham Name: [unknown]
Group: Cacti － Desert Grassland

Description

Mammillaria heyderi var. macdougalii is a broad, flattened cactus that grows on hillsides in the desert grassland above 4000 ft elevation. The large yellow flowers usually open in a wide ring. In good habitat, an old plant may reach a diameter of 10 inches yet be less than 2 inches high. The large, silvery fruit are enjoyed by birds and rodents during the arid fore summer before the Monsoon. Compare with Mammillaria grahamii.

entire plant

flowers

Classification

Kingdom Plantae － Plants

Subkingdom Tracheobionta － Vascular plants

Superdivision Spermatophyta － Seed plants

Division Magnoliophyta － Flowering plants

Class Magnoliopsida － Dicotyledons

Subclass Caryophyllidae

Order Caryophyllales

Family Cactaceae － Cactus family

Genus Mammillaria Haw. － globe cactus

Species Mammillaria heyderi Muehlenpf. － little nipple cactus

Variety Mammillaria heyderi Muehlenpf. var. macdougalii (Rose) L.D. Benson － Macdougalˊs nipple cactus

More Information

USDA Plant Profile and Map