Mammillaria standleyi
Scientific Name: Mammillaria standleyi (Britton & Rose) Orcutt
Synonym: Chilita xanthina, Mammillaria auricantha, Mammillaria auritricha, Mammillaria floresii, Mammillaria laneusumma, Mammillaria mayensis, Mammillaria montensis, Mammillaria xanthina, Neomammillaria standleyi, Neomammillaria xanthina
Family: Cactaceae
The picture was taken mid June at the Phoenix Desert Botanical Garden.
Sunset®: 13-24, 29, 30
USDA: 10-11
Frost Tolerance: Hardy in Phoenix to 28°F (-2°C)
Sun Exposure: Light shade in summer in Phoenix, full sun elsewhere
Origin: Mexico (Sonora, Sinaloa, Chihuahua)
Growth Habits: Clumping, up to 6 inches in diameter (15 cm); milky sap; dark green tubercles 0.4 inch tall (1 cm), 0.3 inch wide at the base (7-8 mm); axils with abundant white bristles; 4 to 6 reddish brown central spines, 0.24 to 0.32 inch long (6-8 mm); 16 to 20 radials, 0.16 to 0.32 inch long (4-8 mm).
Watering Needs: Regular water in summer
Propagation: Offsets
March 15th at the Desert Botanical Garden
Blooming Habits:
Purplish pink flowers, 0.5 inch in diameter (12 mm). Club-shaped red fruit, 0.5 to 0.6 inch long (12-15 mm), with remnants of dry flower.
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