Acharagma roseanum

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Acharagma roseanum
Acharagma roseanum

Acharagma roseanum

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Acharagma
Type : Acharagma roseanum
Scientific name
Acharagma roseanum
( Boed. ) EFAnderson

Acharagma roseanum is a species of plant in the genus Acharagma from the cactus family(Cactaceae). The specific epithet roseanum honors the American botanist Joseph Nelson Rose .

description

Acharagma roseanum usually grows individually, but sometimes branches at the base and then forms small groups. The spherical to cylindrical plant body is bright green in color and is 4 to 6 centimeters high and 1.5 to 5 centimeters in diameter. The warts stand in rows and are up to 0.3 inches long. The 4 to 6 yellow central spines are very similar to the radial spines or are slightly curved and are 1 to 2 centimeters long. The 15 to 30 radial spines are yellowish to brownish and 0.8 to 1.5 centimeters long.

The flowers are pink with a dark reddish central stripe or cream-colored. They are 1.5 to 2 inches long and in diameter.

Distribution, systematics and endangerment

Acharagma roseanum is common in the Mexican states of Coahuila , Nuevo León and San Luis Potosí .

It was first described in 1928 as Echinocactus roseanus by Friedrich Bödeker . Edward Frederick Anderson introduced the species to Acharagma in 1999 .

Synonyms are the following species described:
Echinocactus roseanus Boed. (1928), Neoloydia roseanus (Boed.) FMKnuth (1936), Thelocactus roseanus (Boed.) WTMarshall (1941), Escobaria roseana (Boed.) Buxb. (1951), Coryphantha roseana (Boed.) Moran (1953) and Gymnocactus roseanus (Boed.) Glas & RAFoster (1970).

The following subspecies are distinguished:

  • Acharagma roseanum subsp. galeanense (Haugg) DRHunt :
    It was first described in 1995 as Escobaria roseana subsp. galeanensis by Erich Haugg. David Richard Hunt presented the species as a subspecies to Acharagma roseanum in 2002 . The subspecies has a cylindrical body up to 6 centimeters high, the central spines are indistinguishable from the radial spines, total number of thorns 30, cream-colored flowers up to 1.5 centimeters long.
  • Acharagma roseanum subsp. roseanum :
    The nominate form has an egg-shaped body up to 4 centimeters high, 4 to 6 central spines, about 15 radial spines, pink flowers up to 2 centimeters long.

In the Red List of Threatened Species of IUCN is the species as " Vulnerable (VU) ", d. H. listed as endangered. The subspecies was not recorded separately.

proof

literature

Individual evidence

  1. ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 205.
  2. ↑ Echinocactus roseanus spec. nov. In: Journal of Succulents . Vol. 3, 1928, p. 363.
  3. ^ Cactus and Succulent Journal . (Los Angeles), Vol. 71, Issue 6, 1999, p. 323.
  4. ↑ E. Haugg: In: Cacti and other succulents . Vol. 46, Issue 3, 1995, pp. 76-77.
  5. ↑ DR Hunt: Cactaceae Systematics Initiatives . Number 14, 2002, p. 7.
  6. ↑ Acharagma roseanum in the IUCN Red List of Threatened Species 2013.2. Posted by: Fitz Maurice, B, Sotomayor, M., Fitz Maurice, WA, Hernández, HM & Smith, M., 2009. Retrieved December 17, 2013.

Web links

Commons : Acharagma roseanum  - collection of images, videos and audio files