Bishop's cap (cactus)

Bishop's cap
	Astrophytum myriostigma
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Cacteae
Genre :	Astrophytum
Type :	Bishop's cap
Scientific name
	Astrophytum myriostigma
	Lem.

Four-ribbed Astrophytum myriostigma with opening fruit and flower.

Astrophytum myriostigma 'Tricostata

The bishop's cap ( Astrophytum myriostigma ) is a species from the genus Astrophytum in the cactus family (Cactaceae). The specific epithet myriostigma is derived from the Greek words "μύριος" (myrios) for innumerable and "στίγμα" (stigma) for point, spot . Other common names besides "Bischofsmütze" are "Mitra" and "Bonete de Obispo".

description

Astrophytum myriostigma has a spherical to cylindrical shape. The shoots are covered with dense clusters of white trichomes and therefore appear whitish. They reach a height of 10 to 25 centimeters and a diameter of 10 to 18 centimeters. On the usually 5 broad triangular ribs there are round areoles at a distance of 10 to 20 millimeters . There are no thorns .

The 6 to 7 centimeters long flowers are yellow with a red throat. The sepals are pointed black, the petals serrated. The stamens and the stylus are yellow, the scar is usually 7 parts. The elongated, round, green fruits burst in a star shape.

Distribution, systematics and endangerment

Astrophytum myriostigma is mainly found in the Chihuahua Desert in northern and central Mexico .

The first description by Charles Lemaire was published in 1839. A nomenclature synonym is Echinocactus myriostigma (Lem.) Salm-Dyck (1845).

Other of the numerous synonyms of the very variable species include Astrophytum prismaticum Lem. , Astrophytum coahuilense (H. Moeller) K. Kayser , Astrophytum columnare (K.Schum.) Sadovsky & Schütz , Astrophytum subsp. potosinum (H. Moeller) K. Kayser , Astrophytum subsp. tulense K.Kayser and Astrophytum tulense (K.Kayser) Sadovsky & Schütz .

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

In popular culture

This type of cactus plays an important role in the radio play series "Ghostbox" (2019) by Ivar Leon Menger .

proof

literature

Edward F. Anderson : The Cactus Family . Timber Press: Portland (Oregon), 2001, p. 121, ISBN 0-88192-498-9 .
Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd edition, 1984, Volume V, ISBN 3-437-30384-8 , pp. 2655-2666.
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. 182 ( online ).

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 160.
↑ Cactacearum Genera nova Speciesque novae et omnium in Horto Monvillano cultarum . Paris 1839, p. 4.
↑ Astrophytum myriostigma in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Fitz Maurice, B, Sotomayor, M., Fitz Maurice, WA, Hernández, HM & Smith, M., 2009. Retrieved December 14, 2013.

Web links

Commons : Astrophytum myriostigma - album with pictures, videos and audio files

Astrophytum myriostigma at www.astrobase.de

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 160.

[2] Cactacearum Genera nova Speciesque novae et omnium in Horto Monvillano cultarum . Paris 1839, p. 4.

[3] Astrophytum myriostigma in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Fitz Maurice, B, Sotomayor, M., Fitz Maurice, WA, Hernández, HM & Smith, M., 2009. Retrieved December 14, 2013.