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Parodia ottonis subs. horstii Photo by: Valentino Vallicelli
FR1269 (Collector: Friedrich Ritter) Locality: Sierra Geral South side, Rio Grande do Sul, Brazil.
Origin and Habitat: Rio Grande do Sul (Brazil, Southern America)
Synonyms:
See all synonyms of Parodia ottonis
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Accepted name in llifle Database:Parodia ottonis subs. horstii (F.Ritter) HofackerCactaceae Consensus Init. 6: 12. 1998Synonymy: 14
Accepted name in llifle Database:Parodia ottonis (Lehm.) N.P.TaylorBradleya 5: 93. 1987Synonymy: 67
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Common Names include:
RUSSIAN (Русский): Пародия Хорста
Description: Parodia ottonis subs. horstiiSN|20341]]SN|20341]], best know as Notocactus horstiiSN|20365]]SN|20345]] 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 horstiiSN|20345]]SN|20345]] and violet-purple for what used to be Notocactus purpureusSN|20345]]SN|20365]] up to 3.5 cm in diameter.
Blooming season: Spring.
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Subspecies, varieties, forms and cultivars of plants belonging to the Parodia ottonis group
- Notocactus arechavaletae (Speg. ex Arechav.) Herter: The differences with other Parodia ottonis are minimal and most botanist agree on the fact that both should all be included in the P. ottonis. Distribution: Brazil (Rio Grande do Sul) and Uruguay (Artigas, Rivera).
Notocactus arechavaletae var. limiticola F.Ritter: has the tendency to produce basal suckers on the lateral roots. Distribution: Livramento, border with Uruguay, Rio Grande do Sul, Brazil.
Notocactus arechavaletae var. rubescens F.Ritter: has redder stems in arid conditions and merging into typical green plants in cultivation. Distibution: North of Carazinha, Rio Grande do Sul, Brazil.
Notocactus horstii f. muglianus K.Herm: has areoles more woolly and larger to 10 mm in diameter, flowers orange red to salmon red, and stamens coloured like the petals. Distribution: Candelaria, Rio Grande do Sul, Brazil.
Notocactus muegelianus T.Engel: this is the transitional form between the yellowish-orange and purple forms of Parodia ottonis subs. horstii. Distribution: Candelaria, Rio Grande do Sul
Notocactus ottonis var. paraguayensis (Haage jr.) A.Berger ex Backeb.: has the ribs less rounded, almost acute and red spines. Distribution: Cordillera, and Misiones, Paraguay.
Notocactus ottonis var. tenebrosus n.n.: has dark green stems with 8-10 radial spines and 1 darker central spines, flowers are bright satiny yellow.
Notocactus ottonis var. vencluianus Schütz: has flowers and anthers red. Petals variously shades with peach, salmon, pink-red, vermilion and purple. Distribution: It is a cultivar originated from (habitat?) seed sown in a Czech nurser.
Parodia ottonis (Lehm.) N.P.Taylor: (subsp. ottonis) has globular flattened stems rarely exceeding 6 cm in diameter, only 10 ribs, and 3-4 central spines. Distribution: southern Brazil, Uruguay, and Argentina.
Parodia ottonis subs. horstii (F.Ritter) Hofacker: has stems often to 15 cm in diameter, 12-16 ribs, and 1-4 central spines. Flowers yellowish-orange, pink ot violet-purple. Distribution: Rio Grande do Sul, Brazil.
Parodia ottonis var. tortuosa (Link & Otto) N.P.Taylor: has a very large body (13-18 cm), small flower (25 mm long and 25-50 mm in width) and its spines are almost equal. Distribution Brazil and Uruguay.
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Bibliography: Major references and further lectures
1) Tony Mace “Notocactus: a review of the genus incorporating Brasilicactus, Eriocactus and Wigginsia” Editorial Board/National Cactus & Succulent Society, 1975
2) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
3) 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
4) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006.
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Parodia ottonis subs. horstii Photo by: Valentino Vallicelli
Parodia ottonis subs. horstii Photo by: Cactus Art
Parodia ottonis subs. horstii Photo by: Valentino Vallicelli
Parodia ottonis subs. horstii Photo by: Cactus Art
Parodia ottonis subs. horstii Photo by: Cactus Art
Parodia ottonis subs. horstii Photo by: Cactus Art
Parodia ottonis subs. horstii Photo by: Cactus Art
Parodia ottonis subs. horstii Photo by: Cactus ArtCultivation and Propagation: 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.
Propagation: Usually by seeds as it seldom produces offsets.
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