Mammillaria tesopacensis var. papasquiarensis

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Mammillaria tesopacensis var. papasquiarensis Bravo ex S.Arias, U.Guzmán & S.Gama López
Cact. Suc. Mex. 37(3): 74 (1992)
Family: CACTACEAE

= Mammillaria papasquiarensis (Bravo) Repp.
Gattung Mammill. nach dem Heutigen Stand Meines Wissens 1988 137 (1989), basionym without type Repp.

Accepted Scientific Name: Mammillaria grusonii C.Runge
Gartenflora xxxviii. (1889) 105. fig. 20. ( "grusoni" )

Mammillaria tesopacensis var. papasquiarensis (Mammillaria papasquiarensis) Photo by: Valentino Vallicelli
L1073 (Collector Alfred Bernhard Lau) Penon Blanco, South of Nazas, Durango, Mexico Altitude: 1800 m a.s.l. (a.ka. M. wagneriana)

Origin and Habitat: Mammillaria papasquiarensisSN|15848]]SN|15978]] is endemic to Mexico, where it can be found in the states of Durango (Santiago Papasquiaro, Guatimape, Laguna Morcillo, La Concha, Nazas, Cerro Blanco, San Juan del Rio)
Altitude range: 1700-2200 metres above sea level.
Habitat and ecology: This species grows on low hills together with Echinocereus pectinatusSN|8503]]SN|8503]], Mammillaria chionocephalaSN|15978]]SN|15848]], Opuntia robusta, Opuntia violaceaSN|25092]]SN|25092]], Opuntia herrfeldtii, Agave americanaSN|162]]SN|162]], Yucca filifera, and Dasylirion sp.

Synonyms:

Mammillaria papasquiarensis (Bravo) Repp.

Mammillaria tesopacensis var. papasquiarensis Bravo ex S.Arias, U.Guzmán & S.Gama López

See all synonyms of Mammillaria grusonii

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Accepted name in llifle Database:
Mammillaria grusonii C.Runge
Gartenflora xxxviii. (1889) 105. fig. 20. ( "grusoni" )
Synonymy: 8

Mammillaria grusonii C.Runge
Mammillaria durangicola Repp.
Mammillaria mexicensis R.T.Craig
Mammillaria pachycylindrica Backeb.
Mammillaria papasquiarensis (Bravo) Repp.

Mammillaria tesopacensis var. papasquiarensis Bravo ex S.Arias, U.Guzmán & S.Gama López

Mammillaria zeyeriana F.Haage ex K.Schum.

Neomammillaria zeyeriana (F.Haage ex K.Schum.) Fosberg

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Description: Mammillaria papasquiarensisSN|15974]]SN|15978]] (firstly described as Mammillaria tesopacensisSN|15978]]SN|15982]] v. papasquiarensis by Bravo & Alt. in 1992 ) is a local or morphological form of the widespread and variable Mammillaria grusoniiSN|15974]]SN|15974]]. It has generally longer spines than the Mammillaria grusoniiSN|15974]]SN|15974]].
Stem: Handsome, large, solitary to about 25 cm in diameter (or more), flat-globular if grown in plenty of sunshine, which it relishes, and which helps produce the strong spination it is noted for.
Radial spines: 8 to 10, grey 5 to 40 mm in length.
Central spines: 1 to 3, dark-brown to almost black, becoming grey whit age, 40 to 100 mm in length.
Flowers: Dull white to pinkish with darker central veins.
The distinguishing long spines of Mammillaria papasquiarensisSN|15982]]SN|15978]], appear to fall within the natural variation of Mammillaria grusoniiSN|15978]]SN|15974]] and it should be synonymized with the latter.

Subspecies, varieties, forms and cultivars of plants belonging to the Mammillaria grusonii group

Mammillaria durangicola Repp.: This form has 10-16 radials, 4-15 mm long, 1 - 3 central, 10-17mm long, black, and flowers as in Mammillaria pachycylindrica, with a brownish midstrip.
Mammillaria grusonii C.Runge: It is one of the largest species in the genus and usually solitary, it reaches 30 cm or more in diameter.
Mammillaria mexicensis R.T.Craig: has dark pink flowers.
Mammillaria pachycylindrica Backeb.: (Reppennhagen considered it a separate form) with more spines, 20–23 grayish-white radials and about 6 centrals, at first dark, blackish-brown, becoming gray, tepals lobes with a wide brownish-pink midstrip.
Mammillaria papasquiarensis (Bravo) Repp.: is a long spined form, with 8-10 radial spines, 5-40 mm long, and 1 to 3 central spines, 40 - 100 mm long. The flowers are white with a pinkish midstrip.
Mammillaria tinuvieliae Laferr.
Mammillaria zeyeriana F.Haage ex K.Schum.: The spines are of intermediate measurement, of which the radials are 10 to 15, 8-15 mm long, and the centrals usually 4 (but sometime up to 6), 12 - 25 mm long. The flowers are similar to those of Mammillaria papasquiarensis.

Bibliography: Major references and further lectures
1) British Cactus & Succulent Journal, Volume 23 Page 75 Cactus & Succulent Society, 2005

L1073 Penon Blanco, South of Nazas, Durango, Mexico 1800m (Mammillaria papasquiarensis) Photo by: Valentino Vallicelli

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Cultivation and Propagation: This plant blooms easily and needs lots of light. Use a pot with good drainage and a very porous mineral-based potting mix. Potted plants are quite wet-sensitive, especially in light of its small root system. Water sparingly during the growing season, let soil dry in between to prevent root rot, keep very dry in winter. Feed with a high potassium fertilizer in summer.
Usually it is recommended to over-winter this plant in a bright and warm greenhouse with at least 8-10° C , but it has proven to be quite frost resistant (if kept dry it is hardy as low as -7° C). A resting period in winter and strong light are necessary so that it can flower properly. Plants will offset readily, and dense clumps can be produced in a very few years.
Propagation: Through seeds and cuttings.

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Cite this page: "Mammillaria tesopacensis var. papasquiarensis" Text available under a CC-BY-SA Creative Commons Attribution License. www.llifle.com 14 Nov. 2005. 14 Nov 2024. </Encyclopedia/CACTI/Family/Cactaceae/15979/Mammillaria_tesopacensis_var._papasquiarensis>