Sulcorebutia

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Sulcorebutia
Sulcorebutia steinbachii WR459

Sulcorebutia steinbachii WR459

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Trichocereeae
Genre : Sulcorebutia
Scientific name
Sulcorebutia
Backeb.

Sulcorebutia is a genus of plants from the cactus family(Cactaceae). The botanical name is derived from the Latin noun "sulcus" for furrow and the name of the genus Rebutia . It refers to the furrow between the humps of the plant body.

description

The species of the genus Sulcorebutia grow individually or sprouting. Their flattened spherical to spherical or short cylindrical shoots have a sunken shoot tip. The roots are fibrous or thickened like strands or form a thickened taproot . Their spiral ribs are completely divided into rhombic cusps. The somewhat woolly areoles on the top of the humps sometimes have a short furrow at the top. The thorns cannot always be divided into central and radial spines. If there are central spines, these protrude slightly. The radial spines, which are never hooked, are arranged in a comb-like manner and lie somewhat against the shoot or ascending and protruding.

The funnel-shaped or bell-shaped funnel-shaped flowers are bright purple, yellow or red in color, often also flamed, but rarely white. They often appear from older areoles at the base of the shoots. Your pericarpel and the corolla are covered with some coarse, conspicuous scales and otherwise usually bare.

The hardly fleshy fruits are spherical to flat spherical. They tear open across or dry up leathery. The fruits contain round to oblong egg-shaped, laterally slightly flattened, matt brown-black seeds 1 to 2 millimeters in length.

Systematics and distribution

The genus Sulcorebutia is common in Bolivia . The first description of the genus was published in 1951 by Curt Backeberg . The systematic position of the genus has not been fully clarified. The International Cactus Systematics Group of the International Organization for Succulent Research regards the species as belonging to the genus Rebutia . The genus is closely related to the genus Weingartia . The genus was provisionally recognized until the clarification of the taxonomic problems in Urs Eggli's editing of the cactus lexicon by Edward F. Anderson .

The genus Sulcorebutia includes the following species:

According to more recent morphological and DNA studies, an independent genus Sulcorebutia is not justified, it is almost clearly an artificial grouping, the species of which are not closely related. Like Aylostera and Mediolobivia , the genus should be synonymous with Rebutia .

proof

literature

Individual evidence

  1. ^ Curt Backeberg: Sulcorebutia novum genus Backbg. In: Cactus and Succulent Journal of Great Britain . Volume 13, London 1951, p. 96.
  2. ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 608-613 .
  3. ↑ Willi Gertel, Hansjörg Jucker, Johan de Vries: Sulcorebutia azurduyensis (Cactaceae) - a new species from the area of ​​Azurduy, Bolivia . In: Cacti and other succulents . Volume 57, No. 9, pp. 239-247, 2006
  4. ↑ Willi Gertel, Hansjörg Jucker, Johan de Vries: Sulcorebutia cantargalloensis (Cactaceae) - another new species from the Cordillera Mandinga, Bolivia . In: Cacti and other succulents . Volume 57, No. 2, pp. 43-50, 2006
  5. ↑ Peter Lechner, Alfred Draxler: A new species from Bolivia - Sulcorebutia heliosoides (Cactaceae) . In: Cacti and other succulents . Volume 59, No. 3, pp. 57-63, 2008
  6. ↑ Willi Gertel: Sulcorebutia juckeri (Cactaceae) - a new species from the Cordillera Mandinga, Bolivia . In: Cacti and other succulents . Volume 55, No. 12, pp. 332-338, 2004
  7. ↑ Lothar Diers, Wolfgang Krahn: Sulcorebutia roberto-vasquezii (Cactaceae) - a new species from Bolivia . In: Cacti and other succulents . Volume 56, No. 8, pp. 211-217, 2005
  8. ↑ Willi Gertel, Peter Lechner: Sulcorebutia tarvitaensis (Cactaceae) - a new species from the area around Villa Orias (Bolivia) . In: Cacti and other succulents . Volume 59, No. 2, pp. 29-37, 2008
  9. ↑ Willi Gertel & Hansjörg Jucker: Sulcorebutia trojapampensis (Cactaceae) - a fascinating new species from the area around Sulcorebutia juckeri . In: Cacti and other succulents . Volume 63, No. 5, pp. 127-134, 2012
  10. ↑ Lothar Diers, Wolfgang Krahn: Sulcorebutia vargasii (Cactaceae) - a new species from eastern Bolivia . In: Cacti and other succulents . Volume 56, No. 11, pp. 281-286, 2005
  11. ↑ Peter Lechner, Alfred Draxler, Heinz Birchmann: Sulcorebutia viridis (Cactaceae) - a new species from Bolivia . In: Cacti and other succulents . Volume 61, No. 3, pp. 65-70, 2010
  12. ↑ Lucica Mihalte, Radu E. Sestras, Gyorgy Feszt: Morphological characterization and phylogenetic distance among several genotypes of Rebutia, Aylostera, Mediolobivia and Sulcorebutia (Cactaceae) . In: African Journal of Biotechnology . Volume 10, Number 61, 2011, pp. 13051-13057 ( online ).

Web links

Commons : Sulcorebutia  - collection of images, videos and audio files