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Internoto 14(2): 64 (1993), contrary to Art. 37.4 ICBN (1988).
Family: CACTACEAE
Accepted Scientific Name: Parodia ottonis subs. horstii (F.Ritter) Hofacker
Cactaceae Consensus Init. 6: 12. 1998
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Origin and Habitat: Same as N. horstii.
Type locality: Candelaria, Rio Grande do Sul, Brazil.
Synonyms:
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 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
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 f. purpureus (F.Ritter) K.Herm
- Notocactus purpureus F.Ritter
- Notocactus muegelianus T.Engel
Description: Notocactus horstiiSN|20345]]SN|20345]] fa muglianus is a form of Notocactus horstiiSN|20345]]SN|20345]], but not sufficiently differentiated and considered merely a local variant of the latter (if not the same). The key difference by which the two were separated, namely the presence of deeper rib with areoles more woolly and larger to 10 mm in diameter, flowers up to 5 cm wide with petals always tapering, 3-4 mm wide, orange red to salmon red, and stigma lobes coloured like the petals, seems entirely spurious. The fa mugelianus is not accepted by many botanists that treat it as synonym, but it still has a value for a collector because they identify plants with particular characters.
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) Herm, Konrad (1993): “N. horstii Ritter forma muglianus Herm forma nova” Internoto 14 ( 2 ) 64.
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- The form has areoles more woolly and larger (up to 10 mm in diameter), and flowers up to 5 cm wide with petals always tapering, 3-4 mm wide, orange red to salmon red. Photo by: Alexander Arzberger
The gallery now contains thousands of pictures, however it is possible to do even more. We are, of course, seeking photos of species not yet shown in the gallery but not only that, we are also looking for better pictures than those already present. Read More...
Cultivation 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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