Echinocereus × roetteri

Echinocereus × roetteri
	Echinocereus × roetteri
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Pachycereeae
Genre :	Echinocereus
Type :	Echinocereus × roetteri
Scientific name
	Echinocereus × roetteri
	( Engelm. ) Rümpler pro sp.

Illustration of Echinocereus × roetteri

Echinocereus × roetteri is a natural hybrid species in the genus Echinocereus from the cactus family(Cactaceae). Her parents are Echinocereus coccineus and Echinocereus dasyacanthus . The specific epithet roetteri honors the German-American landscape and plant draftsman Paulus Roetter . An English common name is "Lloyd's Hedgehog Cactus".

description

Echinocereus × roetteri grows singly or as branches and then forms groups with up to 20 or more shoots . The green cylindrical shoots are 15 to 20 centimeters long and have a diameter of 8.5 to 11 centimeters. There are eleven to 13 humped ribs . The two to six straight, spread out central spines are reddish. They have lengths of 1.2 to 1.9 centimeters. The eleven to 16 spreading, straight, reddish gray radial spines are up to 1.5 centimeters long.

The broad, funnel-shaped flowers are mostly orange, but can vary in color from red to pink or yellow. They appear near the shoot tips, are 5 to 6 centimeters long and reach 4.5 to 7 centimeters in diameter.

Distribution and systematics

Echinocereus × roetteri is distributed in the United States in the states of New Mexico and Texas, as well as in neighboring Mexico .

The first description as Cereus roetteri by George Engelmann was published in 1856. Karl Theodor Rümpler placed the species in the genus Echinocereus in 1885 . A. Michael Powell, Allan D. Zimmerman and Richard A. Hilsenbeck recognized in 1991 that the species is a natural hybrid.

proof

literature

Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 207 .

Individual evidence

↑ Cactaceae of the Boundary . In: United States and Mexican Boundary Survey, under the Order of Lietu. Col. WH Emory, Major First Cavalry, and United States Commissioner . Volume 2, part 1, Cornelius Wendell, Washington 1859, p. 33, plate 41 (online) .
↑ George Engelmann: Synopsis of the Cactaceae of the Territory of the United States and Adjacent Regions . In: Proceedings of the American Academy of Arts and Sciences . Volume 3, 1856, pp. 345-346 (online) .
↑ Theodor Rümpler: Carl Friedrich Förster's Handbuch der Cacteenkunde in its entirety: Or, the most successful, cultural information based on the latest experiences. Processed according to the current state of science and increased by the genera and newly introduced species established since 1846 . Volume 2, Wöller, 1885, pp. 829-830 (online) .
^ A. Michael Powell, Allan D. Zimmerman, Richard A. Hilsenbeck: Experimental documentation of natural hybridization in Cactaceae: Origin of Lloyd's Hedgehog Cactus, Echinocereus × lloydii . In: Plant Systematics and Evolution . Volume 178, Number 1-2, 1991, pp 107-122 ( DOI: 10.1007 / BF00937985 ).

Web links

Commons : Echinocereus × roetteri - collection of images, videos and audio files

[1] Cactaceae of the Boundary . In: United States and Mexican Boundary Survey, under the Order of Lietu. Col. WH Emory, Major First Cavalry, and United States Commissioner . Volume 2, part 1, Cornelius Wendell, Washington 1859, p. 33, plate 41 (online) .

[2] George Engelmann: Synopsis of the Cactaceae of the Territory of the United States and Adjacent Regions . In: Proceedings of the American Academy of Arts and Sciences . Volume 3, 1856, pp. 345-346 (online) .

[3] Theodor Rümpler: Carl Friedrich Förster's Handbuch der Cacteenkunde in its entirety: Or, the most successful, cultural information based on the latest experiences. Processed according to the current state of science and increased by the genera and newly introduced species established since 1846 . Volume 2, Wöller, 1885, pp. 829-830 (online) .

[4] A. Michael Powell, Allan D. Zimmerman, Richard A. Hilsenbeck: Experimental documentation of natural hybridization in Cactaceae: Origin of Lloyd's Hedgehog Cactus, Echinocereus × lloydii . In: Plant Systematics and Evolution . Volume 178, Number 1-2, 1991, pp 107-122 ( DOI: 10.1007 / BF00937985 ).