Mammillaria sphaerica

Mammillaria sphaerica, the longmamma nipple cactus or pale mammillaria[1] is a species of flowering plant in the cactus family Cactaceae, native to south eastern Texas in the USA and north eastern Mexico, where it occurs in scattered patches at altitudes up to 1,000 m (3,300 ft).[4] It forms clumps of small pale green spheres (whence sphaerica) to 5 cm (2.0 in) in diameter, with short hairs and pale yellow flowers up to 3 cm (1.2 in) wide in summer.

Mammillaria sphaerica
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Mammillaria
Species:
M. sphaerica
Binomial name
Mammillaria sphaerica
Synonyms
  • Mammillaria longimamma var. sphaerica
  • Cactus sphaericus
  • Dolicothele sphaerica
  • Neomamillaria sphaerica[3]

Its status is listed as “Least Concern” by the IUCN Red List.[1]

It tolerates temperatures down to 1 °C (34 °F), but not being frozen. As it also requires dry conditions during winter, it is best grown under glass in temperate zones, in a typical free-draining, low nutrient cactus compost, in full sun. This plant has won the Royal Horticultural Society’s Award of Garden Merit.[5][6]

References
  1. Heil, K.; Terry, M. (2017). "Mammillaria sphaerica". IUCN Red List of Threatened Species. 2017: e.T151738A121506370. doi:10.2305/IUCN.UK.2017-3.RLTS.T151738A121506370.en. Retrieved 12 November 2021.
  2. "Mammillaria sphaerica A. Dietr". The Plant List. Retrieved 3 April 2018.
  3. "Mammillaria sphaerica A.Dietr". International Plant Names Index. Retrieved 3 April 2018.
  4. "Mammillaria sphaerica A.Dietr". The Encyclopedia of Cacti. Retrieved 3 April 2018.
  5. "RHS Plantfinder - Mammillaria sphaerica". Retrieved 3 April 2018.
  6. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 63. Retrieved 25 March 2018.
The flowers of Mammillaria spherica
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