Scientific Name Mammillaria sphaerica A.Dietr. Common Name(s) Longmamma Nipple Cactus, Longspine Nipple Cactus, Pale Mammillaria Synonym(s) Cactus sphaericus, Dolichothele sphaerica, Mammillaria longimamma var. sphaerica, Mammillaria sphaerica subsp. sphaerica, Neomammillaria sphaerica Scientific Classification Family: Cactaceae Subfamily: Cactoideae Tribe: Cacteae Subtribe: Cactinae Genus: Mammillaria Origin This species is native to the United States (southeastern Texas) and northeastern Mexico (Tamaulipas). It occurs in scattered patches at altitudes up to 3,300 feet (1,000 m). Description Mammillaria sphaerica is a small cactus that forms a clump of pale green globose stems with conical to cylindrical tubercles and white or yellowish spines. The stems grow up to 2 inches (5 cm) in diameter. Tubercles are up to 1 inch (2.5 cm) long and 0.3 inches (0.8 cm) in diameter. Each areole bears one central spine and 12 to 14 radial spines. Flowers are brilliant ...