Origin and Habitat: Over a large area of the Mexican states of Chihuahua, Durango and Coahuila and also Nuevo León.
Type-locality: Near Parras de la Fuente Coahuila.

• Coryphantha gladiispina (Boed.) A.Berger
• Mammillaria gladiispina Boed.

• Coryphantha delaetiana (Quehl) A.Berger
• Mammillaria delaetiana Quehl
• Coryphantha borwigii L.Bremer non J.A.Purpus
• Coryphantha cuencamensis L.Bremer
• Coryphantha durangensis subs. cuencamensis (L.Bremer) Dicht & A.Lüthy
• Coryphantha gladiispina (Boed.) A.Berger
• Mammillaria gladiispina Boed.
• Coryphantha salm-dyckiana (Scheer ex Salm-Dyck) Britton & Rose
• Mammillaria salm-dyckiana Scheer ex Salm-Dyck
• Coryphantha salm-dyckiana var. brunnea (Salm-Dyck) G.Unger
• Mammillaria salm-dyckiana var. brunnea Salm-Dyck

Description: This species has a wide range and shows a great variability. The body is solitary, or forming large groups, heads 8 cm in diameter. Tubercles up to 1 cm long.
Spines: Mostly 3-4 central spines of which the dominant one is porrect up to 2,5 cm long; 7-20 radials often directed upwards and somewhat thinner, up to 2 cm long.
Flowers: Relatively small, pale yellow up 4 cm in diameter.

Bibliography: Major references and further lectures
1) Dr. med. Reto F. Dicht, Adrian D. Lüthy “Coryphantha: Cacti of Mexico and Southern USA” Springer, 2005 ISBN: 978-3-540-22306-1
2) Nathaniel Lord Britton, Joseph Nelson Rose “Cactaceae: Descriptions and Illustrations of Plants of the Cactus Family” Courier Dover Publications, 1963
3) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
4) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011
5) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006

Cultivation and Propagation: Popular with collectors does not cause problems in culture, flowers without problems and often with several flowers at the same time. Hardy to -5° C. Water sparingly, needs good drainage. Keep drier in winter, Full sun to partial shade.