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  Notocactus horstii (var. purpureus)
(Syn: Parodia horstii)
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Notocactus  horstii (var. purpureus)
HU17 Agudo, Serra Geral, Rio Grande do Sul, Brazil (Notes: = FR1269, MGH73)

 

Description: Notocactus horstii is a solitary or slowly clustering medium sized barrel cactus with many flowers in early spring.
Stem: Flattened or spherical up to 10 cm tall and 15 cm in diameter (but in cultivation plant tends to elongate and can grow up to 30 tall) The crown of the plant is covered in spiny white wool.
Flowers: Either orange or yellow for what used to be Notocactus horstii and violet-purple for what used to be Notocactus purpureus (which is now Parodia horstii fa. purpurea) up to 3.5 cm in diameter.
Blooming season: Spring.
 


 


 

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Family: Cactaceae (Cactus Family)

Conservation status: Listed in CITES Appendix II

NOTE: This plant  has been Transferred to Parodia in 1997 by David Hunt.
 

Notocactus horstii var. purpureus

Accepted Scientific name:  Parodia horstii (F.Ritter) N.P.Taylor

Origin Brazil (Rio Grande do Sul)

Conservation status: Listed in CITES appendix 2.

Etymology: Named after Leopold and Melinda Horst which discovered a lot of plants in Brazil
 

Heterotypic synonyms:
  • Notocactus horstii  F.Ritter
  • Notocactus purpureus F.Ritter
  • Notocactus muegelianus


 

 



This variety was called Notocactus purpureus.
The purple-violet flowers are stunning

Cultivation: They like a warm bright location, and do great in partial shade.  Avoid full sun.  During winter's rest period they should be dry and cool.  It is best to avoid any frost, but during the winter the temperature can be as low as 2° C without any harm, as long as the compost is very dry.  They like only a short winter's rest.  If the soil is allowed to be dry for too long, root loss could follow but equally the same result would occur if the plants are both wet and cold. Cold spots can mar its epidermis  in cold damp conditions. They need good drainage and prefer a neutral to slightly acidic compost with plenty of extra grit and iron feed help to delay the onset of basal corking..  Water and feed during the summer.  Best if watered with rain water and given an occasional tonic of sequestrated iron. A well grown plant is a fresh glossy grass- green, contrasting with reddish spines.

Reproduction:  Usually by seeds as it seldom produces offsets.

Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.