Thelocactus hastifer

Thelocactus hastifer
	Thelocactus hastifer
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Cacteae
Genre :	Thelocactus
Type :	Thelocactus hastifer
Scientific name
	Thelocactus hastifer
	( Werderm. & Boed. ) FMKnuth

Thelocactus hastifer is a species of the genus Thelocactus in the cactus family(Cactaceae). The specific epithet hastifer comes from Latin and means 'lances, carrying spears'.

description

Thelocactus hastifer usually grows individually with cylindrical yellowish green shoots and reaches heights of 10 to 30 centimeters with a diameter of 2 to 2.5 centimeters. The 12 to 18 ribs consist of vertically elongated cusps that are 10 to 13 millimeters long, 4 to 5 millimeters wide and 4 to 6 millimeters high. The areoles have a diameter of 4 to 5 millimeters and can carry extra-floral nectaries . There are 4 to 5 white to yellowish brown straight central spines that are 10 to 14 millimeters (rarely up to 26 millimeters) long. The strongest of them is protruding, the others are radiating. The 20 to 25 straight whitish, radiating radial spines are 12 to 15 millimeters long.

The magenta colored flowers are 2.5 to 3 inches long and 3.5 to 5 inches in diameter. The greenish purple fruits are dry when ripe and tear open with a basal pore. The fruits are 8 to 14 millimeters long and have a diameter of 7 to 11 millimeters. They contain seeds 1.7 to 2.1 millimeters long and 0.5 to 1.1 millimeters in diameter.

Distribution, systematics and endangerment

Thelocactus hastifer is distributed in the Mexican states of Hidalgo and Querétaro at altitudes of 1800 to 2000 meters. It was first described as Echinocactus hastifer in 1931 by Erich Werdermann and Friedrich Bödeker . Frederik Marcus Knuth placed them in the genus Thelocactus in 1936 .

Thelocactus hastifer is in the endangered Red List species the IUCN as " Endangered (EN) ," d. H. endangered, classified.

proof

literature

Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 621 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 104.
^ Note sheet of the Botanical Garden and Museum in Berlin-Dahlem . Volume 11, 1931, p. 274.
^ Curt Backeberg, Frederic Marcus Knuth: Cactus ABC . 1936, p. 360.
↑ Thelocactus hastifer in the IUCN Red List of Threatened Species 2013.2. Posted by: Gómez-Hinostrosa, C., Sánchez, E. & Guadalupe Martínez, J., 2009. Retrieved December 14, 2013.

Web links

Commons : Thelocactus hastifer - Collection of images, videos and audio files

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 104.

[2] Note sheet of the Botanical Garden and Museum in Berlin-Dahlem . Volume 11, 1931, p. 274.

[3] Curt Backeberg, Frederic Marcus Knuth: Cactus ABC . 1936, p. 360.

[4] Thelocactus hastifer in the IUCN Red List of Threatened Species 2013.2. Posted by: Gómez-Hinostrosa, C., Sánchez, E. & Guadalupe Martínez, J., 2009. Retrieved December 14, 2013.