Origin and Habitat: Eriosyce reconditaSN|2876]]SN|2876]] is endemic to Chile, where it occurs in the region of Antofagasta in Morro Moreno and Quebrada la Chimba in the close vicinity of Antofagasta. The population seems stable, but the species is scarce. It is known from two localities where it is stable, however the population size is way less than 1,000 individuals.
Altitude range: This species grows at elevations of 600 to 1,000 metres above sea level.
Habitat and Ecology: The species occurs in coastal hills (lomas costeras) on rocky and sandy soils together with Copiapoa bolivianaSN|1743]]SN|1743]] and Eulychnia morromorenoensisSN|8191]]SN|8191]]. It occurs very mimicked, barely protruding from the ground surface. It's a very drought tolerant species. Despite the lack of rain where it lives, the extreme aridity is attenuated by the frequent, often dense, coastal fogs. The fog tends to concentrate in the form of a cloud band at an estimated height of 500 to 850 m. It shows a recurrent pattern; usually it is overcast in the early mornings, the clouds dissipating during the late morning and returning during the late afternoons. This species is anemochorous ((has seeds adapted for dispersal via wind) and resembles in this respect Chileorebutia and Islaya. The presence in habitat of multiple-branched specimens is the result of a previous serial of predation, by an overpopulation of camelids now disappeared by anthropic action. The only major threat known for Eriosyce reconditaSN|2876]]SN|2876]] is illegal collection.

• Eriosyce recondita (F.Ritter) Katt.
• Neochilenia recondita (F.Ritter) Backeb.
• Neoporteria recondita (F.Ritter) Donald
• Pyrrhocactus reconditus F.Ritter

• Eriosyce recondita (F.Ritter) Katt.
• Neochilenia recondita (F.Ritter) Backeb.
• Neoporteria recondita (F.Ritter) Donald
• Pyrrhocactus reconditus F.Ritter
• Eriosyce recondita var. vexata (F.Ritter) A.E.Hoffm.
• Neoporteria vexata nom. inval.
• Pyrrhocactus vexatus F.Ritter
• Neoporteria aricensis (F.Ritter) Donald & G.D.Rowley
• Neochilenia aricensis (F.Ritter) Backeb.
• Pyrrhocactus aricensis F.Ritter
• Neoporteria aricensis var. floribunda (Backeb.) A.E.Hoffm.
• Pyrrhocactus floribundus (Backeb.) F.Ritter
• Reicheocactus floribundus Backeb.
• Neoporteria aricensis var. saxifraga (F.Ritter) A.E.Hoffm.
• Pyrrhocactus saxifragus F.Ritter
• Neoporteria reichei f. floribunda (Backeb.) Donald & G.D.Rowley
• Neoporteria residua (F.Ritter) Donald & G.D.Rowley
• Neochilenia residua (F.Ritter & Buining) Backeb.
• Pyrrhocactus residuus F.Ritter & Buining

• Eriosyce recondita subs. iquiquensis (F.Ritter) Katt.
• Chileorebutia iquiquensis F.Ritter
• Eriosyce iquiquensis (F.Ritter) Ferryman
• Islaya iquiquensis (F.Ritter) Faúndez & R.Kiesling
• Neochilenia iquiquensis (F.Ritter) Backeb.
• Neoporteria iquiquensis var. ( F.Ritter ) Donald
• Pyrrhocactus iquiquensis F.Ritter

Description: Eriosyce reconditaSN|2876]]SN|2876]] is a spherical, sometimes branching cactus species. Two subspecies of Eriosyce reconditaSN|2876]]SN|2876]] are recognized, the nominate form and subs. iquiquensis.
Stem: Subglobose to globose grey to dark green, 2-10 cm in diameter, with sunken stem tips.
Root: Taproots expanded, often with necks.
Ribs: 10-13, notched and forming tubercles and often with sunken areoles.
Spines: Thin, needle-like, black.
Central spines: 1-2,10-15 mm long.
Radial spines: 6-10,5-10 mm long.
Flowers: Borne on young areoles, funnelform, white to pinkish to yellow, 1.5-4 cm long, 2-3.5 cm in diameter; pericarpels and floral tubes with wool and sometimes bristles.
Fruits: Club-shaped, elongate, hollow, dehiscing by basal pores.

Bibliography: Major references and further lectures
1) Guerrero, P., Saldivia, P., Faundez, L. & Walter, H.E. 2013. Eriosyce recondita. The IUCN Red List of Threatened Species. Version 2015.2. <www.iucnredlist.org>. Downloaded on 22 July 2015.
2) Fred Kattermann “Eriosyce (Cactaceae): The Genus Revised and Amplified” David Hunt, 1994
3) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
4) 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/August /2011
5) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
6) “Bosque” Vol. 8, N. 1, page 25, 1987 ISSN 0304-8799
7) G. Fischer “Excerpta botanica: Taxonomica et chorologica. Sectio A”, 1963
8) Curt Backeberg “Die Cactaceae: Handbuch der Kakteenkunde” Volume 6 G. Fischer, 1962
9)Ritter, "Kakteen in Sudamerika" 1980