Origin and Habitat: Stenocactus ochoterenanusSN|21700]]SN|21700]] is endemic to Mexico, where it is distributed in the states of Queretaro and Guanajuato (also reported in Hidalgo, Jalisco, Aguascalientes, Zacatecas and San Luis Potosi)
Habitat and Ecology: The species of uncertain taxonomy grows in desert scrub together with Mammillaria bombycinaSN|9007]]SN|9007]].

• Stenocactus ochoterenanus Tiegel
• Echinofossulocactus boedekerianus f. ochoterenanus (Tiegel) P.V.Heath
• Echinofossulocactus ochoterenaus (Tiegel) H.C.Whitmore

• Stenocactus ochoterenanus Tiegel
• Echinofossulocactus boedekerianus f. ochoterenanus (Tiegel) P.V.Heath
• Echinofossulocactus ochoterenaus (Tiegel) H.C.Whitmore
• Stenocactus bustamantei Bravo
• Echinofossulocactus bustamantei (Bravo) Croizat
• Stenocactus densispinus (Tiegel ex Pechanek)
• Echinofossulocactus boedekerianus f. densispinus (Tiegel ex Pechanek) P.V.Heath
• Echinofossulocactus densispinus Tiegel ex Pechanek
• Stenocactus heteracanthus (Muehlenpf.) A.Berger
• Brittonrosea heteracantha (Muehlenpf.) Speg.
• Echinocactus heteracanthus Muehlenpf.
• Echinofossulocactus crispatus f. heteracanthus (Muehlenpf.) P.V.Heath
• Echinofossulocactus heteracanthus (Muehlenpf.) Britton & Rose
• Efossus heteracanthus (Muehlenpf.) Orcutt
• Stenocactus lexarzai Bravo
• Echinofossulocactus lexarzai (Bravo) Croizat
• Stenocactus parksianus (C.Schmoll ex Pechanek)
• Echinofossulocactus boedekerianus f. parksianus (C.Schmoll ex Pechanek) P.V.Heath
• Echinofossulocactus parksianus C.Schmoll ex Pechanek
• Stenocactus rosasianus (H.C.Whitmore ex Pechanek)
• Echinofossulocactus boedekerianus f. rosasianus (H.C.Whitmore ex Pechanek) P.V.Heath
• Echinofossulocactus rosasianus H.C.Whitmore
• Stenocactus tellii (A.Berger ex hort.)
• Echinocactus tellii A.Berger ex hort.
• Echinofossulocactus crispatus f. tellii (A.Berger ex hort.) P.V.Heath
• Echinofossulocactus tellii Y.Itô

Description: Stenocactus ochoterenanusSN|21700]]SN|21700]] is a solitary or clustering cactus characterized by numerous, acicular radial spines. The 4 central spines are usually more or less terete and the green plant body is generally obscured by the spination. It is extremely variable with one form intergrading into another, creating a taxonomic nightmare.
Stems: Up to 8 cm tall, 10 cm in diameter with woolly apex;
Areoles: Young areoles with white hair.
Ribs: Barely visible beneath the numerous white radial spines, thin sometimes wavy, ± 30 (S. ochoterenanus) or 40 to 50 (S. lexarzai) or 30-34 (S. heteracanthus)
Spines: Radials white numerous 22 or more (S. ochoterenanus) 8 to 10 (S. lexarzai) close to the body, 8-12 mm long. Centrals 4, the superior one up to 6.5 cm long flattened dark-brown that age to tan.
Flowers: Pale pink or pale greenish yellow, 2.5 cm long.
Fruits: Greenish fruit with whitish scales.

Bibliography: Major references and further lectures
1) Edward F. Anderson “The Cactus Family” Timber Press, 2001
2) James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug./2011
3) David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
4) Gómez-Hinostrosa, C., Sánchez , E., Guadalupe Martínez, J. & Bárcenas Luna, R. 2013. Stenocactus ochoterenanus. The IUCN Red List of Threatened Species. Version 2015.1. <www.iucnredlist.org>. Downloaded on 04 June 2015.

Cultivation and Propagation: Easy to to care and flower. No absolute schedule can be given for watering as various factors (Soil mixture, containers, drainage, temperature, size of plant) influence water use, so - as a general rule - the soil should be thoroughly wetted at each watering during the active growing season (spring and summer), water when the top 1,5- 2 cm of soil feels dry to the finger. Do not soak the soil during the dormant period. Be careful, excessive watering can make root and/or stem to rots. Make sure there is good air circulation between plants. Good drainage is essential along good moisture retention properties and adequate nutrients availability. Require bright sunlight to grow well. Dormant plants do best at temperatures from 5-10°C (but will tolerate -5° for short periods). The cooler temperatures develop sturdier plants and encourage the formation of flower buds.
Propagation: By offsets which often are found growing around the base of the plant, Remove the basal offset (if available) in spring or summer and let the cuttings dry for a few days before inserting in compost or (usually) by seed.