Epithelantha
Epithelantha
10
species Cactaceae
Morphological Summary
Genus of miniature globose cacti in the family Cactaceae, native to arid zones of the southwestern United States and northern Mexico. Known as "button cacti", they are very slow-growing and produce tiny pink flowers at the apex. Characterized by their numerous short, tightly packed white spines that densely cover the entire stem surface. Highly valued in specialized cactus collections.
Distribution Southwestern United States (Texas, New Mexico) and northern Mexico (Chihuahua, Coahuila, Durango, Zacatecas, San Luis Potosí). Arid calcareous habitats.
Conservation Some species with very restricted distribution are at risk; protected under CITES Appendix II.
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Results
eco
Epithelantha bokei L.D.Benson
Boke button cactus
Specimen ID RN-EPITH-00001
Origin
Type
eco
Epithelantha micromeris
Button Cactus
Specimen ID RN-EPITH-00003
Origin EE.UU. (Texas, Nuevo México, Arizona), México (Chihuahua, Coahuila, Nuevo León)
Type species
eco
Epithelantha micromeris (Engelm.) F.A.C.Weber in Bois
Button cactus
Specimen ID RN-EPITH-00002
Origin
Type
eco
Crested Form
Epithelantha micromeris f. cristata
Crested Button Cactus
Specimen ID RN-EPITH-00010
Origin Cultivar (mutación natural en EE.UU./México)
Type crested form
eco
Conservation Priority
Epithelantha micromeris var. bokei
Boke's Button Cactus
Specimen ID RN-EPITH-00004
Origin EE.UU. (Texas — región del Big Bend), México (Coahuila)
Type variety
eco
Vulnerable
Epithelantha micromeris var. greggii
Gregg's Button Cactus
Specimen ID RN-EPITH-00005
Origin México (Coahuila, Nuevo León)
Type variety
eco
Epithelantha micromeris var. pachyrhiza
Thick-root Button Cactus
Specimen ID RN-EPITH-00006
Origin México (Coahuila, Nuevo León)
Type variety
eco
Endemic
Epithelantha micromeris var. polycephala
Many-headed Button Cactus
Specimen ID RN-EPITH-00007
Origin México (Coahuila)
Type variety
eco
Endemic
Epithelantha micromeris var. unguispina
Claw-spined Button Cactus
Specimen ID RN-EPITH-00008
Origin México (Nuevo León)
Type variety
eco
Endemic
Epithelantha rufispina
Red-spined Button Cactus
Specimen ID RN-EPITH-00009
Origin México (Coahuila)
Type species