Scientific Name: Mammillaria microcarpa, re-classified to Mammillaria grahammii
Common Name: Fishhook Pincushion
Family: Cactaceae, Cactus Family
Duration: Perennial
Size: 12 inches or less.
Growth Form: Shrub; 1 or several stems, upper portions not enlarged; stems with tubercles (nipples), stems spheric to cylindric.
Leaves: Leaves modified into spines emerging from areoles; spines 26 to 33 per areole, glabrous, radial spines 17 to 35 per areole whitish or pale tan, bristle-like, central spines 3 to 4 per areole, 1 to 3 spines hooked, reddish to purplish brown to almost black and rarely golden brown.
Flower Color: Light pink, dark pink centers, stigmas lobes yellow green to green; 1 or more flowers; outer perianth parts minutely fringed, inner tepals bright rose pink to rose purple; fruit fleshy, green and turning bright red, scarlet to carmine, barrel shaped and elongating until the color change complete, fruits often trimmed with floral remnants.
Flowering Season: April to September across its geographic range, fruiting September to March.
Threatened/Endangered Information: Arizona: Mammillaria grahamii, Graham's Nipple Cactus is salvage restricted.
Comments: Habit at preferences - Chihuahuan and Sonoran desert scrub communities, grasslands, interior chaparral, oak woodlands, alluvial slopes, hills, canons, silty, sandy, gravelly or rocky soils.
