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  Parodia maassii forma cristata
(
Often mispelled:  maassi, masii, masi, massii or massi  )
 
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Parodia masii forma cristata
 

Description: The typical parodia maassii  is a spherical cactus covered with long, curved, dense, and variably coloured spines. In particular the central spines are strong (measuring between 3 and 7 cm).  They are yellow on the upper part of the plant, and go upwards.  In older parts they become clear yellow, and go downwards. The crested form is very rare, and particularly sought after for its  armament of long hooked spines.   Also this crest gets quite large, making a spectacular specimen.
S
tem: Mid-green to intense green color, up to15 cm. wide, with the apical part densely covered with white wool.
Ribs: 13- 21, chinned and arranged in spiral.
Areoles: Big and woolly at first, but they become naked with age.
Flowers: Funnel-shaped, large coppery-yellow or orange, but they can also be carmine or red with an orange center. 3 (or more) cm across.
 

Cultivation: It is a fairly easy plant to grow, both grafted or in its own roots.  During the summer it is best to keep the plants outside where the temperature can rise to over 30 C with no harm to the plant.  Furnish good drainage and use an open and free-draining mineral compost that allows roots to breath.  These plants like only a short winter's rest, and should be kept almost completely dry during the winter months.  If the soil is allowed to be dry for too long, root loss may follow, but the same result would occur if the plants were both wet and cold.  From March onwards the plant will begin to grow, and watering should be increased gradually until late May, when the plant should be in full growth.
Water regularly during the summer, as long as the plant pot is allowed to drain, and not sit in a tray of water.  During hot weather you may need to water the plants more frequently, as long as the plant is actively growing. From late September watering should be reduced, to force the plant to go in to a state of semi dormancy.   By October you should be back to the winter watering regime.
These plants need full sun, avoiding only the harshest summer sun.  If kept too dark they may become overly lush and green, and could be prone to rot due to over-watering.
Feeding may not be necessary at all if the compost is fresh.   Then feed in summer only if the plant hasn't been repotted recently.  Do not feed the plants from September onwards, as this can cause lush growth which can be fatal during the darker cold months.  Grown specimens resist to -4C for a short time, but it is best to keep above 0 C to avoid ugly spots on the plant epidermis.

Propagation: By vegetative propagation, grafting, or stem cuttings from adult plants.
 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Parodia maassii complex (This Taxon has lots of synonyms (like most Parodia), with several controversial varieties and subspecies):

Family: Cactaceae (Cactus Family)

Scientific name: Parodia maassii (masii or massii) ((Heese) A. Berger
Kakteen (Berger) 344, 1929  forma cristata


Origin:
Garden origin (Nursery produced cultivar)

Conservation status: Listed in CITES appendix 2.
 

Synonyms:  

  • Echinocactus maassii Heese
  • Malacocarpus maassii
  • Bolivicactus maassii

It It is a very variable species, with dense, strong and curved spination,
often yellow or amber coloured.
 

 




 

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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.

The Encyclopedia of Cacti