Notocactus arechavaletae var. horstii

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Notocactus arechavaletae var. horstii F.Ritter
Kakteen Südamerika 1: 166. 1979
Family: CACTACEAE

Accepted Scientific Name: Parodia ottonis subs. horstii (F.Ritter) Hofacker
Cactaceae Consensus Init. 6: 12. 1998

Notocactus arechavaletae var. horstii (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:

Parodia ottonis subs. horstii (F.Ritter) Hofacker

Notocactus arechavaletae var. horstii F.Ritter
Notocactus horstii F.Ritter
Notocactus ottonis subs. horstii (F.Ritter) Doweld
Parodia horstii (F.Ritter) N.P.Taylor
Peronocactus horstii (F.Ritter) Doweld
Peronocactus ottonis subs. horstii (F.Ritter) Doweld
Wigginsia nothohorstii (F.Ritter) Doweld

See all synonyms of Parodia ottonis

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Accepted name in llifle Database:
Parodia ottonis (Lehm.) N.P.Taylor
Bradleya 5: 93. 1987
Synonymy: 67

Parodia ottonis (Lehm.) N.P.Taylor

Cactus ottonis Lehm.
Echinocactus ottonis (Lehm.) Link & Otto
Malacocarpus ottonis (Lehm.) Britton & Rose
Notocactus ottonis (Lehm.) A.Berger
Peronocactus ottonis (Lehm.) Doweld

Echinocactus ottonis var. pallidior Monv. ex Lem.
Echinocactus ottonis var. spinosior Monv. ex Lem.
Echinocactus tenuispinus var. minor Link & Otto
Notocactus acutus F.Ritter

Notocactus oxycostatus f. acutus (F.Ritter) N.Gerloff

Notocactus arechavaletae (Speg. ex Arechav.) Herter

Echinocactus acuatus var. arechavaletae K.Schum. ex Speg.
Echinocactus arechavaletae Speg. ex Arechav.
Malacocarpus arechavaletae (Speg. ex Arechav.) A.Berger
Wigginsia arechavaletae (Speg. ex Arechav.) D.M.Porter

Notocactus arechavaletae var. alacriportanus F.Ritter
Notocactus arechavaletae var. aureus F.Ritter

Notocactus ottonis f. aureus (F.Ritter) N.Gerloff & Neduchal

Notocactus arechavaletae var. buenekeri F.Ritter
Notocactus arechavaletae var. limiticola F.Ritter
Notocactus arechavaletae var. nanus F.Ritter
Notocactus arechavaletae var. rubescens F.Ritter
Notocactus grandiensis Bergner
Notocactus maldonadensis (Herter) Herter

Echinocactus maldonadensis Herter

Notocactus neo-ottoianus Y.Itô
Notocactus ottonis var. acutangularis F.Ritter
Notocactus ottonis var. albispinus Backeb.
Notocactus ottonis var. elegans Backeb.

Notocactus ottonis f. elegans (Backeb. & Voll) Havlíček

Notocactus ottonis var. globularis (F.Ritter) Bergner

Notocactus globularis F.Ritter
Notocactus ottonis f. globularis (F.Ritter) N.Gerloff & Neduchal

Notocactus ottonis var. janousekianus K.Papoušek
Notocactus ottonis var. nigrispinus H.D.Lück
Notocactus ottonis var. paraguayensis (Haage jr.) A.Berger ex Backeb.

Echinocactus ottonis var. paraguayensis Haage jr.
Echinocactus ottonis f. paraguayensis (Haage jr.) Schelle

Notocactus ottonis var. rubrispinus Prestlé

Notocactus ottonis subvar. rubrispinus Prestlé

Notocactus ottonis var. schuldtii Kreuz.

Notocactus oxycostatus var. schuldtii (Kreuz.) N.Gerloff

Notocactus ottonis var. stenogonus Backeb.
Notocactus ottonis var. tenebrosus n.n.
Notocactus ottonis var. tenuispinus (Link & Otto) Borg

Echinocactus ottonis var. tenuispinus (Link & Otto) Pfeiff.
Echinocactus ottonis f. tenuispinus (Link & Otto) Schelle
Echinocactus tenuispinus Link & Otto
Notocactus neo-ottoianus var. tenuispinus (Link & Otto) Y.Itô
Notocactus tenuispinus (Link & Otto) Herter

Notocactus ottonis var. uruguayensis (Arechav.) Frič

Echinocactus ottonis var. uruguayus Arechav.
Notocactus uruguayus (Arechav.) Herter

Notocactus ottonis var. vencluianus Schütz
Notocactus ruoffii N.Gerloff

Notocactus minimus var. ruoffii (N.Gerloff) N.Gerloff & Neduchal

Notocactus tenuispinus f. cristatus P.V.Heath
Parodia amambayensis (Werderm.) Borg

Echinocactus amambayensis Werderm.
Parodia paraguayensis (K.Schum.) Speg.

Parodia ottonis var. tortuosa (Link & Otto) N.P.Taylor

Echinocactus ottonis var. tortuosus (Link & Otto) K.Schum.
Echinocactus ottonis f. tortuosus (Link & Otto) Schelle
Echinocactus tortuosus Link & Otto
Notocactus neo-ottoianus var. tortuosus (Link & Otto) Y.Itô
Notocactus ottonis var. tortuosus (Link & Otto) Borg

Accepted name in llifle Database:
Parodia ottonis subs. horstii (F.Ritter) Hofacker
Cactaceae Consensus Init. 6: 12. 1998
Synonymy: 14

Parodia ottonis subs. horstii (F.Ritter) Hofacker

Notocactus arechavaletae var. horstii F.Ritter
Notocactus horstii F.Ritter
Notocactus ottonis subs. horstii (F.Ritter) Doweld
Parodia horstii (F.Ritter) N.P.Taylor
Peronocactus horstii (F.Ritter) Doweld
Peronocactus ottonis subs. horstii (F.Ritter) Doweld
Wigginsia nothohorstii (F.Ritter) Doweld

Notocactus horstii f. muglianus K.Herm
Notocactus horstii f. purpureiflorus (F.Ritter) K.Herm

Notocactus horstii var. purpureiflorus F.Ritter

Notocactus horstii f. purpureus (F.Ritter) K.Herm

Notocactus purpureus F.Ritter

Notocactus muegelianus T.Engel

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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.

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.

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.

Notocactus arechavaletae var. horstii (Parodia ottonis subs. horstii) Photo by: Valentino Vallicelli