Acanthocereus

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Acanthocereus
Acanthocereus subinermis Plate 16 from Volume 2 The Cactaceae by Britton and Rose

Acanthocereus subinermis
Plate 16 from Volume 2 The Cactaceae by Britton and Rose

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Pachycereeae
Genre : Acanthocereus
Scientific name
Acanthocereus
( Engelm. Ex A. Berger ) Britton & Rose

Acanthocereus is a genus of plants fromthe cactus family (Cactaceae). The botanical name is derived from the Greek noun ἄκανθοζ ( ákanthos ) for thorn and refers to thecolumnar shapecovered with thorns .

description

The plants form more or less high bushes which later usually overhanging or spreading and are rarely tree-shaped. They usually have 3 (rarely 4 to 5) thin, rarely flattened and sometimes wavy ribs with mostly strong thorns .

The large, white, funnel-shaped flowers are 12 to 25 centimeters long, 6 to 12 centimeters in diameter and open at night. The sparsely scaled pericarpel and the long, stiff, upright flower tube are covered with a few thorns that soon decay and little wool.

The red or green, bare or thorny, tearing or non-tearing fruits are spherical to egg-shaped or pear-shaped and contain wide oval, shiny black seeds of up to 4.8 millimeters.

Systematics and distribution

The genus Acanthocereus is distributed in tropical America from Florida over the Caribbean , in Mexico and from southern Central America to Colombia .

In 1909 Nathaniel Lord Britton and Joseph Nelson Rose raised the subsection Cereus subsect described by Alwin Berger in 1905 . Acanthocereus Engelm. ex A.Berger to the rank of an independent genus. Berger later treated the genus as a subgenus Cereus subg. Acanthocereus Engelm. ex A. Berger (1929). The type species is Cereus baxaniensis Karw. ex whistle.

The genus Acanthocereus includes the following species :

A synonym of the genus is Monvillea Britton & Rose (1920).

proof

literature

  • NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape III . The Carnegie Institution of Washington, Washington 1922, p. 44-45 .
  • Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. tape IV . Gustav Fischer Verlag, Stuttgart New York 1984, ISBN 3-437-30383-X , p. 1930-1940 .
  • Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 68-70 .
  • Walther Haage : cacti from A to Z . 3. Edition. Quelle & Meyer Verlag, Heidelberg 1986, ISBN 3-494-01142-7 , p. 10-11 .

Individual evidence

  1. ^ The Genus Cereus and its Allies in North America . In: Contributions from the United States National Herbarium . Volume 12, number 10, p. 432, 1909, (online) .
  2. ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 69-70 .

further reading

Web links

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