Green-Flower Nipple Cactus, Green-Flower Mammillaria
- Scientific Name: Mammillaria Viridiflora
- Common Name: Green-Flower Nipple Cactus, Green-Flower Mammillaria
- Habitat: Rocky slopes
- Life Form: Cactus, pincushion
- Leaf Description: Leafless
- Flower Color: Greenish or green yellow or yellowish pink or magenta
- Flowering Period: Spring
- Spines: Hooked spines
- Rarity: Rare
- Family: Cactaceae (cactus family)