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  Astrophytum myriostigma forma columnare CACTUSPEDIA       

 


Astrophytum myriostigma var. columnare
 

Description: This questionable variety is very similar to the other myriostigmas, it only deviate from the well-known typical form for its more columnar growth and smaller flowers size.
Stem: Slender and more thin, already in the youth phase. Dimension 25-50(-100) cm tall, only 5-8 cm in diameter shaped like a bishop's headpiece or a star.
Ribs: few (usually 5).
Flowers: Absolutely smaller than those of A. myriostigma, hardly 2,5 cm in length, pale-yellow, silk-shining, occasionally with an orange gloom.
 

The stem is shaped like a bishop's headpiece or a star but slender and more thin than the standard myriostigma, already in the youth phase.
Nearly every cactus collection has room for these beautiful, small plants that seldom grow more
than 5 cm  wide and are usually less than 50 cm tall
 


 

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Cultivation:
Although regarded as a choice and difficult plant in cultivation it is relatively easy to grow. It is sometime seen as a grafted plant but grows very well on its own roots too. Use mineral well permeable substratum with little organic matter (peat, humus). Water sparingly from March till October and keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is Hardy to -7°C for short periods) In the rest period no high atmospheric humidity!! Sun Exposure: Light shade to full sun.

Propagation: Almost exclusively by seed. Plants are sometimes grafted onto column-shaped cacti.


 

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery Astrophytum

Family: Cactaceae (Cactus Family)

Scientific name:  Astrophytum myriostigma v. columnare (K. Schumann) Tsuda

Notes: As well occasionally called Astrophytum myriostigma var. tulensis.

Common NameBishop's Hat

Conservation status: Listed in CITES appendix 2.

Origin: Mexico.  Villar, Cerritos and far north in the area of Tula and Miquihuana in the State of Tamaulipas, Dr. Arroyo in the State of Nuevo Leon.

Habitat: Prefers stony conditions in humus enriched soil, at approximately 1600 m of height of over the sea. I grows often under trees or protected by Hechtia clumps.

Synonyms:

  • Astrophytum myriostigma Lemaire
    Original description: Cactacearum Genera nova Speciesque novae et omnium in Horto Monvillano cultarum: 4-6 1839
  • Echinocactus myriostigma v. columnare SCHUMANN, K.
    Published in : Gesamtbeschreibung der Kakteen, Monographia Cactacearum, 2. ed. mit den Nachträgen von 1898-1902 J. Neumann Verlag, Neudamm: 321 (1903)
    Original description
  • Astrophytum myriostigma v. columnare  (K. Schumann) Tsuda
  • Astrophytum myriostigma var. columnaris
  • Astrophytum "Culumnare"


Columnar cactus, whose stem
may reach 50 cm in height.
 

 


Photo of conspecific taxa, varieties, forms and cultivars of Astrophytum myriostigma:



 

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This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

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