Thelocactus hastifer
Thelocactus hastifer
Thelocactus hastifer is a species of the genus Thelocactus in the cactus family ( Cactaceae ). The specific epithet hastifer comes from Latin and means, lances, spears pregnant '.
Description
Thelocactus hastifer grows mostly single with cylindrical yellowish green shoots and reaches diameters of 2 to 2.5 cm plant height of 10 to 30 centimeters. The ribs 12 and 18 consist of vertical elongated protuberances are 10 to 13 mm long, 4-5 mm wide and 4-6 millimeters high. The areoles have diameters of 4-5 mm and can carry extra-floral nectaries. There are 4-5 white to yellowish brown straight central spines present, the (rarely to 26 mm) are 10 to 14 millimeters long. The strongest of them is spreading, the rest are radiating. The 20 to 25 straight whitish, radiating spines are 12 to 15 millimeters long.
The magenta flowers are 2.5 and 3 inches long and have a diameter of 3.5 to 5 centimeters. The greenish- purple fruits are dry at maturity and tear with a basal pore on. The fruits are 8 to 14 millimeters in length and have a diameter from 7 to 11 millimeters. They contain 1.7 to 2.1 mm long with a diameter seed of 0.5 to 1.1 millimeters.
Distribution, systematics and hazard
Thelocactus hastifer is used in the Mexican states of Hidalgo and Querétaro at altitudes from 1800 to 2000 meters. The first description as Echinocactus hastifer followed in 1931 by Erich Werdermann and Frederick Boedeker. Frederik Marcus Knuth she put 1936 in the genus Thelocactus.
Thelocactus is hastifer in the Red List of Threatened Species IUCN as ' Endangered ( EN )', ie endangered classified.