Obregonia | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Caryophyllales |
Family: | Cactaceae |
Subfamily: | Cactoideae |
Genus: | Obregonia Fric |
Species: | O. denegrii |
Binomial name | |
Obregonia denegrii | |
Synonyms | |
Ariocarpus denegrii(Fric) Marshall Contents |
Obregonia, the artichoke cactus, is a monotypic genus of cacti, containing the species Obregonia denegrii. The species is endemic to the state of Tamaulipas in Mexico.
The genus Obregonia is named after Álvaro Obregón, [3] while the species is named after Ramon P. De Negri, who was the Minister of Agriculture of Mexico when the cacti was first described by Alfred Frec in 1923. [4]
Obregonia denegrii typically grows as a single plant, characterized by a sunken and woolly apex. This rare species resembles an inverted green pine cone with a woolly center. The stems take on a globular-squashed form with a woolly center, reaching diameters of up to 15 cm (5.9 in) and showcasing a color spectrum from greyish green to dark green. Small areoles are situated at the tips of the tubercles, adorned with wool in their early stages. The areoles exhibit 2 to 4 whitish to brown spines, measuring approximately 5 to 15 mm (0.20 to 0.59 in) in length, on the young tubercles. These spines are soft, flexible, slightly curved, and tend to shed rapidly. In the summer, flowers bloom, emerging between the wool of the apex and at the center of the stem on young tubercles. These flowers take on a funnel-shaped, diurnal, white appearance, with dimensions reaching up to 2.5 cm (0.98 in) in diameter and 2.5-3 cm (1.2 in) in length. The external perianth segments exhibit a greyish hue, and the pericarpel is either exposed or possesses a few scales. Filaments are reddish-purple or pink, anthers are yellow, and both the style and stigma lobes are white. [5]
Obregonia denegrii originates from the Valley of Jaumave in Ciudad Victoria, Tamaulipas, Mexico, commonly thriving at elevations around 1000 meters. This plant prospers in semi-desert open areas and dense bushes. It grows slowly in culture and requires little water. It benefits from full sun and is multiplied by seed. It is very slow growing.
It is an IUCN Red List Endangered species.
The Nahuatl Indians call the plant peyotl, and it is said to have hallucinogenic alkaloids. [4] It is one of the closest living relatives of the genus Lophophora . [6]
Mammillaria is one of the largest genera in the cactus family (Cactaceae), with currently 200 known species and varieties recognized. Most of the mammillaria are native to Mexico, but some come from the southwest United States, the Caribbean, Colombia, Venezuela, Guatemala and Honduras. The common name "pincushion cactus" refers to this and the closely related genus Escobaria.
Geohintonia mexicana is a species of cacti, the only species in the genus Geohintonia. This genus is named after its discoverer George S. Hinton. As its specific epithet suggests, the plant is found in Mexico, where it grows on gypsum hills near Galeana.
Leuchtenbergia is a genus of cactus which has only one species, Leuchtenbergia principis. It is native to north-central Mexico. The genus is named after Maximilian Eugen Joseph (1817–1852), Duke of Leuchtenberg and amateur botanist.
Strombocactus disciformis is a rare species of cacti and the only species of the genus Strombocactus. The plant originates from Central and Northeast Mexico.
Mitrocereus is a monotypic genus of cacti. Its sole species is Mitrocereus militaris, native to Mexico.
Yavia cryptocarpa is a species of cactus and the only species of the newly discovered genus Yavia. The genus is named after Argentina's department Yavi, Jujuy Province, where the plant is endemic to sparsely vegetated rocky slopes. The plant is also sometimes put in the tribe Notocacteae. The specific epithet cryptocarpa refers to the plant being a cryptocarp. This means that the fruits are formed inside the plant's body, thus being only visible when the plant shrinks in the drought period.
Ariocarpus fissuratus is a species of cactus found in small numbers in northern Mexico and Texas in the United States. Common names include living rock cactus, false peyote, chautle, dry whiskey and star cactus.
Kroenleinia grusonii, popularly known as the golden barrel cactus, golden ball, "mother-in-law's cushion" or "mother-in-law’s chair" is a species of barrel cactus which is endemic to east-central Mexico.
Ariocarpus agavoides is a species of cactus. It is endemic to Mexico. It grows in dry shrubland in rocky calcareous substrates. Some taxonomists place it in a separate genus as Neogomezia agavoides. The locals use the slime from the roots of the plants as glue to repair pottery. The sweet-tasting warts are eaten and often added to salads
Selenicereus grandiflorus is a cactus species originating from the Antilles, Mexico and Central America. The species is commonly referred to as queen of the night, night-blooming cereus, large-flowered cactus, sweet-scented cactus or vanilla cactus. The true species is extremely rare in cultivation. Most of the plants under this name belong to other species or hybrids. It is often confused with the genus Epiphyllum.
Aztekium ritteri is a species of cactus native to the Mexican state of Nuevo León.
Echinocactus platyacanthus, also known as the giant barrel cactus, golden barrel cactus, giant viznaga, or biznaga de dulce, Its Nahuatl (Aztec) name is Huitzli nahual. It is a species of cactus. It is native to central Mexico in the Chihuahuan Desert. This species is the largest of the barrel cacti. In Mexico the hairs are often used for weaving; the acitrón, a traditional Mexican candy, is produced by boiling the pith.
Mammillaria spinosissima, also known as the spiny pincushion cactus, is a species of flowering plant in the cactus family Cactaceae, endemic to the central Mexican states of Guerrero and Morelos, where they grow at elevations of approximately 1,600 to 1,900 metres. The species was described in 1838 by James Forbes, gardener of the Duke of Bedford. Botanist David Hunt collected a specimen in 1971, when he located one near Sierra de Tepoztlan, Mexico.
Ferocactus pilosus, also known as Mexican lime cactus or Mexican fire barrel, is a species of cactus in North America.
Mammillaria hahniana, the old lady cactus, is a species of flowering plant in the family Cactaceae, native to central Mexico. It grows to 25 cm (10 in) tall by 50 cm (20 in) broad. The solitary spherical stems, 12 cm in diameter, are covered in white down and white spines. Reddish purple flowers are borne in spring and summer, sometimes forming a complete ring around the apex of the plant.
Stenocactus multicostatus, the brain cactus, is a member of the cactus family native to the deserts of Mexico, and is popular in the gardening community. It has gained the Royal Horticultural Society's Award of Garden Merit.
Thelocactus rinconensis, synonyms including Thelocactus nidulans, is a species of cactus. It is endemic to north-east Mexico.
Thelocactus tulensis is a species of cactus. It is endemic to Mexico.
Pelecyphora aselliformis is a species of Pelecyphora found in Mexico.
Echinocereus viereckii is a species of cactus native to Mexico.