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         Notocactus rudibuenekeri "ALBISSIMO"
 This beautiful selection  has expressive long, very, very 
        white and soft spines. Unique!
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        | Morphology (Identifying
            
            Characteristics): It is a 
        whitecolumnar 
        cactus, fuzzy cactus, usually solitary, or 
        slowly clustering with spiral of 
        
        dense 
        
        white spines in columns.
 Stem:  Globose-Cylindrical, 
        erect, green, up to 20 cm tall, 5 cm in 
        diameter.
 Spines: Long, 
        
        erect, 
        
        very white, 
        
        glassy and 
        soft.
 Flowers:  
        Diurnal, opening in during the day and closing at night. 
        Pale to bright yellow up to 4 cm in diameter, developing from white 
        flower-buds.
 Blooming season: Summer.
 
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        | Family: 
        
        
        Cactaceae (Cactus 
        Family) 
        
        Scientific name:  Notocactus 
        rudibuenekeri Abraham  W.R.
        In:  Succulenta 67 (6): 133-138  
        (1988)
 
        
        Holotypus: W.R.Abraham WRA355, Found by R. Bueneker West of Sao 
        Gabriel, Rio Grande do Sul, deposited in the Herbarium of the 
        university  of Köln am Rhein/D.
        . Subfamily: CactoideaeTribe: Notocacteae
 
        
        Origin:  The N. rudibuenekeri comes from
        Brazil (Rio Grande do Sul) this pure white selection is of 
        
         garden origin (Nursery 
        produced cultivar) 
        
        Conservation status: Listed in
        
        CITES appendix 2. 
        
        Etymology: Named after the discoverer Rudi W. Büneker. 
         
        
        Synonyms:   
          Notocactus 
          rudibuenekeri 
          var. rudibuenekeri 
           Parodia 
          rudibuenekeri (W. R. Abraham) Hofacker & P. J. Braun 1998
          Peronocactus 
          rudibuenekeri (Abraham) Doweld 1999 nom.gen.inval. 
            Scopacactus
          rudibuenekeri Abraham (nach Doweld 2000) 
          Scopacactus
          rudibuenekeri ssp. rudibuenekeri (nach Doweld 2000) 
          Notocactus 
          scopa var. longispinus n.n. Lemaire 1838 
          Notocactus 
          scopa var. 
          rudibuenekeri   
        
        
        Heterotypic synonyms: 
          Notocactus 
          glomeratus N.Gerloff  (Basionym)Internoto 12 (1): 3 - 10 1991
 Holotypus: F.Stockinger FS249
 Discovery site: 
          Fazenda Darilho, between
           Minas do Camqua and 
          Santana da Boa vista, Rio Grande do Sul. Found by W.R.Abraham and 
          F.Stockinger, deposits in the Herbarium of the former 
           SSSZ 
          in Zürich/CH.
Notocactus 
          rudibuenekeri 
          var. glomeratus 
          (N. Gerloff 1991) N. Gerloff & Neduchal  Internoto 
          24 (3/4): 52-53 2003Parodia 
          rudibuenekeri ssp. glomerata (Gerloff) Hofacker 1998 
          
          Peronocactus rudibuenekeri
          ssp. 
          glomeratus (N.Gerloff) Doweld 1999 nom.gen.inval. 
          Scopacactus rudibuenekeri 
          ssp. glomeratus (N. Gerloff) Doweld 2000 Notocactus scopa var. 
          glomeratus n.n.   |  
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            Cultivation: 
        This is an easy plant to cultivate.   It
            require a
            
            mineral-based potting mix with a good
            
            drainage. 
        Can support quite some water during the growing season
            but pot plants in winter are
            
            wet-sensitive  and 
            needs to be kept
            
            dry  (rots easily if soil is wet and cold).
            Usually it is recommended to
            
            over-winter 
        this plant in a bright and warm greenhouse with at least 8-10° C , but 
        it has proved to tolerate temperatures as low as -5° C for short periods. 
            
             Sun Exposure:
                
                Light shade to
                
                full sun but doesn't like 
        full, hot blazing sun in the central summer month.
 Propagation: Seeds,
            
            cuttings. Not too difficult to raise from seed.
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        |  Photo of conspecific taxa, varieties, forms and 
        cultivars of plants belonging to the  
        Notocactus scopa   
        
        
        complex:
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