Mammillaria estebanensis

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Mammillaria estebanensis
Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Mammillaria
Type : Mammillaria estebanensis
Scientific name
Mammillaria estebanensis
GELinds.

Mammillaria estebanensis is a species of the genus Mammillaria in the cactus family(Cactaceae). The specific epithet estebanensis refers to the occurrence of the species on the island of San Esteban .

description

Mammillaria estebanensis grows individually or in groups. The gray-green, cylindrical shoots have a rounded apex. They grow up to 50 centimeters high and 6 to 10 centimeters in diameter. The warts are firm, pyramidal and without milky sap . The axillae are covered with wool and 5 to 8 long bristles with a length of up to 0.8 centimeters. One  central spine is brown with a dark tip. It is straight or hooked and between 0.4 and 1.5 centimeters long. The 15 to 22 radial spines are needle-like, straight, brownish to golden or white and up to 1 centimeter long.

The funnel-shaped or bell-shaped flowers are up to white and up to 2 inches long and 2.5 inches in diameter. The red fruits contain black seeds .

The species is closely related to Mammillaria dioica .

Distribution and systematics

Mammillaria estebanensis is distributed in the Mexican state of Baja California on the island of San Esteban and on the San Lorenzo archipelago .

The first description was in 1967 by George Edmund Lindsay .

Synonyms are the following species, varieties and forms described:
Mammillaria dioica f. estebanensis (GELinds.) Neutel. (1986), Mammillaria angelensis var. Estebanensis (GELinds.) Repp. (1987) Mammillaria dioica subsp. estebanensis (GELinds.) DRHunt (1998) and Cochemiea dioica subsp. estebanensis (GELinds.) Doweld (2000).

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 380 .
  • Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 122 .

Individual evidence

  1. ↑ J. Lüthy: Taxonomic investigation of the genus Mammillaria , special issue of the working group for Mammillarienfreunde (AfM), Frankenthal 1995
  2. ^ Cactus and Succulent Journal . (Cactus and Succulent Society of America), Vol. 39, 1967, p. 31.

Web links