Pseudorhipsalis

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Pseudorhipsalis
Pseudorhipsalis alata

Pseudorhipsalis alata

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Hylocereeae
Genre : Pseudorhipsalis
Scientific name
Pseudorhipsalis
Britton & Rose

Pseudorhipsalis is a genus of plants fromthe cactus family (Cactaceae). The botanical name of the genus is derived from the Greek verb "ψεύδω" (pseudo) for deceive and means deceiving Rhipsalis . The type species of the genus is Pseudorhipsalis alata .

description

The species of the genus Pseudorhipsalis are shrubby with drooping shoots and grow epiphytically or occasionally lithophytically . The shoots are initially round, then flattened and leaf-like. The edges are notched and without thorns .

The short funnel-shaped or wheel-shaped flowers are white to yellowish white and 7 to 35 millimeters long. They open in the day. The flower tube is long or short, but clearly recognizable. There are a few scales on the pericarpel and the flower tube. The berry-like, egg to spherical fruits are whitish and often tinged with purple. They are up to 10 millimeters long and more or less bare. The egg-shaped, smooth seeds are dark brown.

Distribution and systematics

The genus Pseudorhipsalis is common in Central America and the Caribbean . One species ( Pseudorhipsalis ramulosa ) is also widespread in South America . The first description was in 1923 by Nathaniel Lord Britton and Joseph Nelson Rose .

The genus includes the following species:

Karl Moritz Schumann described a new genus Wittia in 1903 , which, however, was published as invalid under Article 53.1 of the International Code of Botanical Nomenclature . Another synonym is the genus Wittiocactus , which Stephan Rauschert (1931–1986) established in 1982.

Myron William Kimnach (* 1922) assigns the species of the genus Pseudorhipsalis to the genus Disocactus . The International Cactus Systematics Group of the International Organization for Succulent Research , however, followed the approach of Wilhelm Barthlott , who regards Pseudorhipsalis as independent.

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 550-552 .
  • Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. tape II . Gustav Fischer Verlag, Stuttgart New York 1983, ISBN 3-437-30381-3 , p. 701-703 .
  • NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape IV . The Carnegie Institution of Washington, Washington 1923, p. 213-214 .

Individual evidence

  1. ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 550-552 .
  2. ↑ Monthly for cactus science . 1903, p. 117.
  3. ↑ Taxon Volume 31, No. 3, p. 558

Web links

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