Origin and Habitat: Garden origin (Nursery produced cultivar

• Parodia scopa f. cristata hort.

• Parodia scopa (Spreng.) N.P.Taylor
• Cactus scopa Spreng.
• Cereus scopa (Spreng.) Salm-Dyck ex DC.
• Echinocactus scopa (Spreng.) Link & Otto
• Echinopsis scopa (Spreng.) Carrière
• Malacocarpus scopa (Spreng.) Britton & Rose
• Notocactus scopa (Spreng.) A.Berger
• Peronocactus scopa (Spreng.) Doweld
• Notocactus scopa f. albicans (Arechav.) N.Gerloff & Neduchal
• Echinocactus scopa var. albicans Arechav.
• Echinocactus scopa f. albicans (Arechav.) Schelle
• Notocactus scopa var. albicans (Arechav.) Hofacker
• Notocactus scopa f. albilanatus Jahn
• Notocactus scopa f. candidus (Pfeiff.) Krainz
• Echinocactus scopa var. candidus Pfeiff.
• Echinocactus scopa f. candidus (Pfeiff.) Schelle
• Notocactus scopa var. candidus (Pfeiff.) Backeb.
• Notocactus scopa f. cobrensis (N.Gerloff) N.Gerloff & Neduchal
• Notocactus scopa var. cobrensis N.Gerloff
• Notocactus scopa f. daenikerianus (Krainz) Krainz
• Notocactus scopa var. daenikerianus Krainz
• Notocactus scopa f. erythrinus Havlíček
• Notocactus scopa f. glauserianus (Krainz) Krainz
• Notocactus scopa var. glauserianus Krainz
• Notocactus scopa f. machadoensis (W.R.Abraham) N.Gerloff & Neduchal
• Notocactus scopa var. machadoensis W.R.Abraham
• Notocactus scopa var. murielii Hofacker
• Notocactus scopa f. ramosus (Osten) Backeb.
• Echinocactus scopa f. ramosus Osten
• Notocactus scopa var. ramosus (Osten) Backeb.
• Notocactus scopa f. ruberrimus Frič
• Notocactus scopa f. xicoi (W.R.Abraham) N.Gerloff & Neduchal
• Notocactus scopa var. xicoi W.R.Abraham
• Notocactus scopa f. xiphacanthus (W.R.Abraham) N.Gerloff & Neduchal
• Notocactus scopa var. xiphacanthus W.R.Abraham
• Notocactus soldtianus Vliet
• Parodia scopa f. cristata hort.
• Parodia scopa f. splendens hort.

• Parodia scopa subs. marchesii (W.R.Abraham) Hofacker
• Notocactus scopa subs. marchesii (W.R.Abraham) Doweld
• Notocactus scopa var. marchesii W.R.Abraham
• Notocactus scopa f. marchesii (W.R.Abraham) N.Gerloff & Neduchal
• Peronocactus scopa subs. marchesii (W.R.Abraham) Doweld

• Parodia scopa subs. neobuenekeri (F.Ritter) Hofacker & P.J.Braun
• Notocactus neobuenekeri F.Ritter
• Notocactus scopa subs. neobuenekeri (F.Ritter) Doweld
• Parodia neobuenekeri (F.Ritter) Anceschi & Magli
• Peronocactus scopa subs. neobuenekeri (F.Ritter) Doweld

• Parodia scopa subs. succinea (F.Ritter) Hofacker & P.J.Braun
• Notocactus scopa subs. succineus (F.Ritter) Doweld
• Notocactus scopa f. succineus (F.Ritter) N.Gerloff & Neduchal
• Notocactus succineus F.Ritter
• Parodia succinea (F.Ritter) N.P.Taylor
• Peronocactus scopa subs. succineus (F.Ritter) Doweld
• Parodia scopa subs. succinea f. albiseta hort.
• Notocactus scopa var. albispinus hort.
• Notocactus succineus var. albisetus hort.
• Notocactus succineus var. albispinus hort.
• Parodia scopa f. albiseta hort.
• Parodia scopa var. sulphurea hort.
• Notocactus scopa var. sulphureus hort.
• Notocactus sulphureus hort.

• Parodia scopa cv. inermis
• Notocactus scopa f. monstruosus
• Notocactus scopa cv. inermis
• Parodia scopa f. monstruosa
• Parodia scopa cv. inermis cristata
• Notocactus scopa f. monstruosus cristatus
• Notocactus scopa cv. inermis cristatus hort.
• Parodia scopa f. monstruosa cristata

Description: Parodia scopaSN|15897]]SN|15897]] is a silvery spined cactus often clustering with showy yellow flowers. The stems are almost hidden by soft tufts of bristly white and red-brown spines somewhat similar to small brushes. The crested form Parodia scopaSN|15897]]SN|15897]] f. cristata - despite to its beauty - is very rare and sought after by collectors for its white covering of fine bristly.
Stem: Dark green, fan-shaped forming up to 5 cm thick forming with age a large white convoluted mound.
Ribs: Low, obtuse, finely notched into low warts tipped with areoles.
Areoles: White woolly.
Central spines: About 4 (but varying from 2 to 12) medium length (6-12 mm long), needle-like, stouter than radials, purple, red-brown, orangish or white.
Radial spines: Shorter, fine, bristles-like, glassy white or yellowish, 5-7 mm long, spreading around.
Flowers: A cluster of satiny, bright yellow flowers spring in the upper part of the stem forming a ring, The are 2-4 cm long and 3,5-4,5 cm in diameter. Inner perianth segments in two overlapping series, spatulate, rather wide for their length, ± toothed above, Pistil with about 10, rayed, bright crimson stigma lobes. Tube short. Scales on the ovary woolly with brown bristles.
Blooming: seson: June-July.
Fruits: Globose, about 7 mm in diameter, opening at maturity, with numerous seeds.
Seeds: Dull black tuberculate.

Bibliography: Major references and further lectures
1) James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug./2011
2) David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
3) Edward F. Anderson “The Cactus Family” Timber Press, 2001

Cultivation and Propagation: Although regarded as a choice and difficult plant is not too difficult in a greenhouse, although grows quite slowly. It is sometime seen as a grafted plant but grows very well on its own roots too.
Soil: Use mineral well permeable mineral soil with little organic matter (peat, humus).
Exposure: They need a good amount of light shade to full sun this help to keep the plants healthy, although slow growth.
Watering: Water sparingly from March till October (weekly during summertime, if the weather is sunny enough) , with a little fertilizer added. Less or no water during cold winter months, or when night temperatures remain below 10° to prevent root loss. It is sensitive to overwatering (rot prone).
Fertilization: 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.
Hardiness: Keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is relatively cold resistant and hardy to -5° C, or possibly colder for short periods) In the rest period no high atmospheric humidity!! (Temperature Zone: USDA 9-11)
Crested growth: Unlike 'monstrose' varieties of plants, where the variation from normal growth is due to genetic mutation, crested growth can occur on normal plants. Sometimes it's due to variances in light intensity, or damage, but generally the causes are unknown. A crested plant may have some areas growing normally, and a cresting plant that looks like a brain, may revert to normal growth for no apparent reason. If you have any of the crested part left you need to remove the normal growth and leave the crested part behind this will need to be done regularly.
Propagation: Grafting or cuttings. Plants are usually grafted onto column-shaped cacti but proved to be able to produce their own roots if degrafted. Cuttings will take root in a minimum temperature of 20° C (but better in hot weather). Cuttings of healthy shoots can be taken in the spring and summer. Cut the stem with a sharp, sterile knife, leave the cutting in a warm, dry place for a week or weeks (depending on how thick the cutting is) until a callus forms over the wound. Once the callus forms, the cutting may be inserted in a container filled with firmed cactus potting mix topped with a surface layer of coarse grit. They should be placed in the coarse grit only; this prevents the cut end from becoming too wet and allows the roots to penetrate the rich compost underneath. The cuttings should root in 2 to 6 weeks. Large crested piece must be placed on the soil surface without burying the plant base down in the soil.