Mammillaria perezdelarosae

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Mammillaria perezdelarosae
Mammillaria perezdelarosae

Mammillaria perezdelarosae

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Mammillaria
Type : Mammillaria perezdelarosae
Scientific name
Mammillaria perezdelarosae
Bravo & Scheinvar

Mammillaria perezdelarosae is a species of plant in the genus Mammillaria in the cactus family(Cactaceae). The specific epithet honors the Mexican forest engineer and secretary of the botanical institute of the University of Guadalajara Jorge Perez de la Rosa (* 1955).

description

Mammillaria perezdelarosae grows solitary, spherical to elongated. The bright dark green body with the densely placed warts is up to 7.5 centimeters high and up to 4.5 centimeters in diameter. The warts do not contain milky juice . The axillae are sometimes provided with numerous bristles, otherwise woolly. 30 to 60 fine-needle radial spines, which are only 1 to 7 millimeters long, shine glassy white or glassy brown and cover the entire plant body in a comb shape. The 1 to 3  central spines are brown to black, red in the new shoot and 0.8 to 1.4 centimeters long. The longest and thickest are often also hooked.

The flowers appear as with all Mammillarias in wreath. They are whitish pink and reach a size and diameter of 2 centimeters. The fruits are whitish. The seeds are black to black-brown.

Distribution and systematics

Mammillaria perezdelarosae is distributed in the Mexican states of Jalisco and Aguascalientes in mountainous regions around 2100 meters.

The first description was in 1985 by Helia Bravo Hollis and Leia Scheinvar .

The following synonyms are known for Mammillaria perezdelarosae : Mammillaria bombycina subsp. perezdelarosae (Bravo & Scheinvar) DR Hunt (1997) and Escobariopsis perezdelarosae (Bravo & Scheinvar) Doweld (2000).

The following subspecies are distinguished:

Mammillaria perezdelarosae subsp. andersoniana
  • Mammillaria perezdelarosae subsp. perezdelarosae :
    The nominate form has significantly larger shoots that are 12 centimeters high and 5 centimeters in diameter.
  • Mammillaria perezdelarosae subsp. andersoniana W.A. & Betty Fitz Maurice :
    The first description was in 2001 by Walter Alfred Fitz Maurice and Betty Fitz Maurice . The subspecies has significantly smaller shoots. They grow up to 2 inches high and 2.5 inches in diameter. There is only one known site near the city of Zacatecas in central Mexico at altitudes above 2000 meters.

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 400 .
  • Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 148 .
  • WA and Betty Fitz Maurice: Field Notes - Another look at Mammillaria bombycina and M. perezdelarosae and something new: M. perezdelarosae ssp. andersoniana . In: Bulletin of the working group for Mammillarienfreunde (AfM) . Volume 26 (1), 2002, p. 32-37 .
  • John Pilbeam : Mammillaria The Cactus File Handbook . cactusfile.com, Southampton 1999, ISBN 0-9528302-8-0 , pp. 219 .

Individual evidence

  1. ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 182.
  2. ↑ H. Bravo Hollis, L. Scheinvar: Cactaceas y Suculentas Mexicanas . Volume 30, Number 4, 1985, p. 76.
  3. ↑ WA Fitz Maurice, Betty Fitz Maurice: Fieldnotes: another look at Mammillaria bombycina and M. perezdelarosae, and something new: M. perezdelarosae ssp. andersoniana. In: Cactus and Succulent Journal. Vol. 73, No. 5, Los Angeles 2001, pp. 263-268.

Web links

Commons : Mammillaria perezdelarosae  - Collection of images, videos and audio files