Origin and Habitat: Mexico.

• Mammillaria elegans DC.
• Cactus elegans (DC.) Kuntze
• Neomammillaria elegans (DC.) Britton & Rose

• Mammillaria geminispina Haw.
• Cactus geminispinus (Haw.) Kuntze
• Neomammillaria bicolor var. nivea Y.Itô
• Neomammillaria geminispina (Haw.) Britton & Rose
• Neomammillaria neoelegans Y.Itô
• Mammillaria elegans DC.
• Cactus elegans (DC.) Kuntze
• Neomammillaria elegans (DC.) Britton & Rose
• Mammillaria geminispina var. brevispina (Hildm.) Backeb.
• Mammillaria nivea var. brevispina Hildm.
• Mammillaria geminispina var. monacantha Lem. & Monv.
• Mammillaria geminispina var. nobilis (Pfeiff.) Backeb.
• Cactus nobilis (Pfeiff.) Kuntze
• Mammillaria bicolor var. nobilis (Pfeiff.) C.F.Först.
• Mammillaria bicolor f. nobilis (Pfeiff.) Schelle
• Mammillaria nobilis Pfeiff.
• Mammillaria geminispina var. tetracantha Lem. & Monv.

• Mammillaria geminispina subs. leucocentra (A.Berg) D.R.Hunt
• Cactus leucocentrus (A.Berg) Kuntze
• Mammillaria leucocentra A.Berg
• Mammillaria albata var. longispina Repp.
• Mammillaria albata var. Repp. Repp.
• Mammillaria albata var. sanciro Repp.
• Mammillaria geminispina f. alba hort.
• Mammillaria geminispina f. nivea hort.

Description: Mammillaria elegansSN|20850]]SN|13998]] A.P. de Candolle 1828. is a 'nomen confusum' (confused name) also applied to Mammillaria haageanaSN|14012]]SN|20850]] ssp elegans and referes bolth to Mammillaria geminispinaSN|20850]]SN|14012]] with latex in the stem (Subgenus Mammillaria section Hydrochylus series supertextae ) and to Mammillaria haageanaSN|13998]]SN|20850]], without latex in the stem ( Subgenus Mammillaria, section Galactophylous, series Leucocephale)
Habit: Solitary, seldom branching cactus.
Stem: Globose, 5-8 cm in diameter, slightly depressed at the apex with little wool. Abundant wool in the young axils. Don’t contain latex.
Radial spines: 16-18, white, slender, needle-like, interlacing somewhat curved, longer at the sides, 1-5 mm long.
Central spines: 2, often only 1, stout needle-like to awl-shaped, straight or a little bent, grey-brown, darker at the tip, 5-8 mm long.
Flowers: Bright rose-red with darker midstripe, 15-20 mm long.

Bibliography: Major references and further lectures
1) David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
2) John Pilbeam (1999) “Mammillaria The Cactus File Handbook” Nuffield Press.
3) Stuart Max Walters “The European Garden Flora: Dicotyledons (Part I)” Cambridge University Press, 1989
4) Edward F. Anderson “The Cactus Family” Timber Press, 2001