Mammillaria guelzowiana
Mammillaria guelzowiana
Mammillaria guelzowiana is a species of the genus Mammillaria in the cactus family ( Cactaceae ). The specific epithet honors the German cacti collector Robert Gülzow from Berlin.
Description
Mammillaria guelzowiana growing at first individually and later forming groups. The spherical shoots have a countersunk head. You can reach stature heights of up 7 inches and diameter of 4 to 10 inches. The weichfleischigen warts are conical to cylindrical. They contain no latex. The axillae are bald. The 1-6 slender, needle-like, reddish brown to yellowish central spines are 8 to 25 millimeters long. One of them is hooked. The hair-like white 60 to 80 radial spines are twisted and up to 15 millimeters long.
The bell - to funnel-shaped flowers are more or less bright purple, to 4 inches long and can reach a diameter of 7 centimeters. The almost spherical bright red or yellowish-white fruits are up to 8 mm long.
Distribution, systematics and hazard
Mammillaria guelzowiana is common in the Mexican state of Durango.
The first description was in 1928 by Erich Werdermann.
Synonyms are the following species and varieties described: Krainzia guelzowiana ( Werderm. ) Backeb. (1951 ), Phellosperma guelzowiana ( Werderm. ) Buxb. (1951 ), Bartsch Ella guelzowiana ( Werderm. ) Doweld (2000) and Mammillaria guelzowiana var robustior R. Wolf (1986).
Mammillaria was guelzowiana in the Red List of Threatened Species IUCN in 2002 as " Critically Endangered (CR ) ', ie threatened with extinction, classified. In 2013 it is described as " Least Concern ( LC) ," ie, than not led at risk.