Aporocactus martianus explained

Aporocactus martianus (syn. Disocactus martianus) is a species of cactus found in Oaxaca, Mexico.

Description

Disocactus martianus grows creeping, occasionally forming lithophytic with aerial roots. It is a species of fleshy, cylindrical suspended or creeping cactus with stems up to 1.5 meters long and up to 2.5 centimeters thick, sometimes with aerial roots, with 8 to 10 slightly wart-shaped ribs; 3 or 4 central pale brown spines up to 12 mm long and 6 to 20 radial spines are light yellowish and only 5 to 7 millimeters long. The bright red flowers are diurnal and produced in summer, 10 to 12 centimeters in diameter and a length of 5 to 7 centimeters. The flowers stay open for a couple of days. They are followed by globose fruits of green color and 2 cm in diameter. It is viviparous.[1]

Taxonomy & Systematics

It was first described as Cereus martianus in 1837 by Ludwig Georg Karl Pfeiffer.[2] Wilhelm Barthlott moved the species to Disocactus in 1991[3] The following species and varieties are synonyms:

In their synopsis of the tribe Hylocereeae from 2017, Nadja Korotkova, Thomas Borsch and Salvador Arias interpret the species as a synonym of Aporocactus martianus.[4]

Notes and References

  1. 10.1078/0367-2530-00175 . 199 . 6. Vivipary in the Cactaceae: Its taxonomic occurrence and biological significance . Flora - Morphology, Distribution, Functional Ecology of Plants . 481–490. 2004. Cota-Sánchez. J. Hugo. 2004FMDFE.199..481C .
  2. Web site: Botanicus.org: Enumeratio diagnostica cactearum hucusque cognitarum . Botanicus.org . 2021-04-01.
  3. 1991. Notes on miscellaneous genera of Cactaceae DNA. Bradleya. 9. 5718. 118–120. 10.25223/brad.n9.1991.a2. 15692015 . Herr . A. J. . Jensen . M. B. . Dalmay . T. . Baulcombe . D. C. .
  4. Martínez-Quezada . Daniel M. . Arias . Salvador . Korotkova . Nadja . Terrazas . Teresa . The phylogenetic significance of the stem morpho-anatomy in the Hylocereeae (Cactoideae, Cactaceae) . Plant Systematics and Evolution . Springer Science and Business Media LLC . 306 . 1 . 2020 . 0378-2697 . 10.1007/s00606-020-01639-x . 8. 2020PSyEv.306....8M .