Regularity: Regularly occurring
Global Range: Found in southern Texas in approximately 15 counties (below a line from Laredo to Corpus Christi) as well as in Tamaulipas and Nuevo León, Mexico.
Habitat and Ecology
Comments: It occurs in Texas brush country, including grassland and thicket areas, often under shade among bushes or in gravelly spots among grasses, and in Tamaulipan thorn scrub on plains and low gravelly hills, 0 - 300 m.
Life History and Behavior
IUCN Red List Assessment
Red List Category
Red List Criteria
Mammillaria sphaerica has a relatively wide range, and even though it is not abundant, there are no known threats affecting it. Hence, it is listed as Least Concern.
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: Found in southern Texas in approximately 15 counties (below a line from Laredo to Corpus Christi) as well as in Tamaulipas and Nuevo León, Mexico. In at least Texas, it is "rather common". Occurs in Texas brush country and Tamaulipan thorn scrub, under shade among bushes and in gravelly spots among grasses on plains and low gravelly hills, from 0 to 300 m elevation.