Mammillaria guelzowiana

Mammillaria guelzowiana
Conservation status
	; Least Concern (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Genus:	Mammillaria
Species:	M. guelzowiana
Binomial name
	Mammillaria guelzowiana; Werderm.
Synonyms
	Krainzia guelzowiana; Phellosperma guelzowiana;

Mammillaria guelzowiana is a species of plant in the family Cactaceae. The species epithet guelzowiana honors the German cactus collector Robert Gülzow of Berlín.

Description

Mammillaria guelzowiana is a perennial plant that grows fleshy, globose, at first solitary and then forming groups. The stems have a spherical, apically depressed, about 7 inches tall and 4-10 inches in diameter. Tubercules are conical and cylindrical. They do not contain latex. The plant has 1-6 thin central spines, needle shaped, yellowish red, 8 to 25 millimeters long. The 60-80 radial spines are long and twisted, about 15 mm long. The bell-shaped flowers are purple, more or less bright, up to 4 inches long and can reach 7 inches in diameter. The fruits are almost spherical, bright red or yellowish white, about 8 mm in length.

Distribution

This species is endemic to Mexico.

Habitat

Its natural habitat are hot deserts and grassy mountain tops, at an elevation of 1,300–1,700 metres (4,300–5,600 ft) above sea level.

Mammillaria guelzowiana at the Orto Botanico dell'Università di Genova
Mammillaria guelzowiana at the Prague Botanic Garden

References

Fitz Maurice, W.A. & Fitz Maurice, B. (2017). "Mammillaria guelzowiana". The IUCN Red List of Threatened Species. IUCN. 2017: e.T40836A121499961. doi:10.2305/IUCN.UK.2017-3.RLTS.T40836A121499961.en. Retrieved 12 December 2017.

Tropicos
The plant list
Cacti Guide
Mammillaria.net
Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names. Birkhäuser 2004
Fitz Maurice, W.A. & Fitz Maurice, B. 2002. Mammillaria guelzowiana. 2006 IUCN Red List of Threatened Species. Downloaded on 22 August 2007.

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[iucn-1] Fitz Maurice, W.A. & Fitz Maurice, B. (2017). "Mammillaria guelzowiana". The IUCN Red List of Threatened Species. IUCN. 2017: e.T40836A121499961. doi:10.2305/IUCN.UK.2017-3.RLTS.T40836A121499961.en. Retrieved 12 December 2017.