Siccobaccatus

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Siccobaccatus
Siccobaccatus estevesii in the habitat

Siccobaccatus estevesii in the habitat

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cereeae
Genre : Siccobaccatus
Scientific name
Siccobaccatus
PJ Brown & Esteves
Typical fruit of Siccobaccatus dolichospermaticus
Siccobaccatus dolichospermaticus in flower
Siccobaccatus insigniflorus with an orange-bristle cephalium
Siccobaccatus insigniflorus in flower
Siccobaccatus estevesii at the original site
Siccobaccatus dolichospermaticus border area Bahia / Minas Gerais

Siccobaccatus is a genus of plants fromthe cactus family (Cactaceae). The botanical name of the genus refers to the thin-walled, almost paper-like dry fruit walls. The type species of the genus is Siccobaccatus dolichospermaticus .

description

The species of the genus grow sturdy, columnar, upright, mostly single, or only very weakly branched from the base, lignified vascular bundles, blue-ripened and hard epidermis. Areoles oval, spines thin needle-shaped. From a height of about 1–2 m a continuously straight down cephalium is formed, white wool, more or less interspersed with bristles. Flowers funnel-bell-shaped, nocturnal, white, ivory-colored, self-sterile. Pollination by bats. Fruits very thin-walled, almost paper-like, remnants of flowers adhering. The fruits open in the cephalium, the black to black-brown, elongated seeds trickle out of the cephalium and are carried away by ants. Germination takes place in cracks in the rock.

Distribution and systematics

The genus Siccobaccatus is common in northeast / central Brazil . All species grow exclusively on strongly karstified so-called Bambui rocks in the west of Bahia , in the northwest of Minas Gerais , in the northeast of Goiás and in the southeast of Tocantins .

It was first described as a genus in 1990 by Pierre J. Braun and Eddie Esteves Pereira .

The two species Siccobaccatus dolichospermaticus and Siccobaccatus estevesii were originally described as Austrocephalocereus in 1974 and 1975 . In 1979 Friedrich Ritter (without knowing the two affected species personally) formally placed all species published as Austrocephalocereus in the genus Micranthocereus . Siccobaccatus was therefore a synonym or subgenus Micranthocereus subgen for a long time . Siccobaccatus (PJ Braun & Esteves) NP Taylor & Zappi run.

More recent DNA studies show, however, that Micranthocereus (in the broader sense as explained above) is polyphyletic and Siccobaccatus is an independent genus. Newer treatises therefore accept Siccobaccatus at the generic level, e.g. B. in the Red List of Threatened Species of the IUCN or in the latest overview of the Cactaceae.

In addition to the type species , two other species are known:

proof

Individual evidence

  1. ↑ Braun, PJ & Esteves Pereira, E. 1990: Siccobaccatus PJ Braun & Esteves gen. Nov. Een nieuw cactusgeslacht uit Brazilie. Succulenta 69: 11-18.
  2. ↑ Braun, PJ & Esteves Pereira, E. 2002: Cacti and other succulents in Brazil - Schumannia, Volume 3. ISBN 3-89598-830-8
  3. ↑ Ritter, F. 1979: Cacti in South America: Results of my 20 years of field research. Volume 1, Spangenberg.
  4. ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 637-638 .
  5. ^ NP Taylor & DC Zappi: Cacti of Eastern Brazil. Royal Botanic Gardens, Kew. 499 pp. 2004.
  6. ↑ Hunt, D. (Ed.): The New Cactus Lexicon. dh books, Milborne Port 2006, ISBN 0-9538134-4-4
  7. ↑ Aona, L. 2003: Characterizacao e delimitacao do genera Micranthocereus Baxkeb. (Cactaceae) bathing me characteres morgologicos e moleculares. Diss., Campinas, SP. Brazil.
  8. ↑ Braun, P. & Esteves, E. 2008. Siccobaccatus insigniforus: A new status for a marvelous columnar cactus from Brazil. Cactus and Succulent Journal 80 (1): 36-41
  9. ↑ Nyffeler, R. & Eggli, U. 2010: A farewell to dated ideas and concepts: molecular phylogenetics and a revised supAGENeric classification of the family Cactaceae. - Schumannia 6: 109-149.
  10. ↑ Siccobaccatus estevesii in the IUCN Red List of Threatened Species 2013.2. Posted by: Machado, M. & Braun, P., 2010. Retrieved January 3, 2014
  11. ↑ Siccobaccatus dolichospermaticus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Machado, M. & Braun, P., 2010. Retrieved January 3, 2014
  12. ↑ Siccobaccatus insigniflorus in the IUCN Red List of Threatened Species 2015.4. Posted by: Braun, P. & Machado, M. 2013. Retrieved February 24, 2016
  13. ↑ Lodé, J. 2015: "TAXONOMY of the CACTACEAE" The new classification of Cacti based on molecular data and explained In two volumes: Vol. II: 158. Siccobaccatus. Cactus Adventures Eds., Barcelona.

Web links

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