Echinocereus rigidissimus

Echinocereus rigidissimus
	Echinocereus rigidissimus subsp. rubispinus L88
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Pachycereeae
Genre :	Echinocereus
Type :	Echinocereus rigidissimus
Scientific name
	Echinocereus rigidissimus
	( Engelm. ) Hort. FAHaage

Echinocereus rigidissimus is a species of plant in the genus Echinocereus from the cactus family(Cactaceae). The specific epithet rigidissimus is the comparative of the Latin word rigidus , means 'stiff' and refers to the thorns of the species. English common names are “Arizona Rainbow Hedgehog Cactus” and “Sonoran Rainbow Cactus”.

description

Echinocereus rigidissimus usually grows individually. The spherical to cylindrical shoots are 6 to 30 centimeters long and have a diameter of 4 to 11 centimeters. They are completely covered by the thorns. There are 15 to 26 low ribs that are flat tubercles. Central spines are not developed. The 15 to 35 comb-like arranged, often interlocking spines all rest on the surface of the shoot. They are strong, red, white, yellowish or even brownish and have lengths of 0.5 to 1 centimeter.

unripe fruits

The funnel-shaped flowers are bright pink to magenta and have a white throat. They are seldom completely white. The flowers appear at the shoot tips, are 6 to 7 centimeters long and reach 6 to 9 centimeters in diameter. The egg-shaped green to red and heavily thorny fruits are fleshy.

Distribution, systematics and endangerment

Echinocereus rigidissimus is common in the southwest United States and northwest Mexico .

The first description as Cereus pectinatus var. Rigidissimus by George Engelmann was published in 1856. In a plant catalog of the Kakteen-Haage company , the species was placed in the genus Echinocereus in 1897 . Nomenclatory synonyms are Echinocereus pectinatus var. Rigidissimus (Engelm.) Rümpler (1885), Echinocereus dasyacanthus var. Rigidissimus (Engelm.) WTMarshall (1941) and Echinocereus pectinatus f. rigidissimus (Engelm.) Krainz (1967).

The following subspecies are distinguished:

Echinocereus rigidissimus subsp. rigidissimus
Echinocereus rigidissimus subsp. rubispinus (G.Frank & ABLau) NPTaylor

In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered.

proof

literature

Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 206-207 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 203.
↑ 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. 279-280 (online) .
↑ Echinocereus rigidissimus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Terry, M. & Heil, K., 2009. Retrieved January 25, 2014.

Web links

Commons : Echinocereus rigidissimus - Collection of images, videos and audio files

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 203.

[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. 279-280 (online) .

[3] Echinocereus rigidissimus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Terry, M. & Heil, K., 2009. Retrieved January 25, 2014.