Lobivia
Most species produce fairly large, beautiful flowers and can survive freezing temperatures if dry.
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Lobivia boyuibensis

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ex 7cm pot

Lobivia famatimensis

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Rare miniature, seen here in a 7cm pot.  Also known as Reicheocactus pseudoreicheanus, but more correctly now as Echinopsis famatimensis

Lobivia formosa f. rosarioana

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Larger picture 
L. formosa v. rosarioana (Rausch) Rausch = Lobivia rosarioana Rausch.

Lobivia formosa v. grandis

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soeh_formosa_grandis_TN
Larger picture 
ex 9cm pot

Lobivia grandiflora

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ex 9cm pots

Lobivia huasha rubriflora HG28

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El Asquincilla, Cat., Arg
for 7cm pot

Lobivia maximiliana hermanniana RBC455

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Palca, La Paz, Bol
for 7cm pot

Lobivia maximiliana miniatiflora L307

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Inquisivi, La Paz, Bol
Un-rooted cutting

Lobivia maximiliana v. characanensis

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ex 7cm pot

Lobivia schieleana f. adpressed spines

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lobivia_adpressed_TN
ex 7cm pot