Notocactus (K. Schumann) Frič (1928)

(Brasiliparodia, Malacocarpus, Wigginsia)
(greek notos = southern; latin cactus = cactus, thistle)
cactus of the south
Notocactus got its name because of its origin far distant in the south, inside of the older genus Echinocactus

globular, medium sized, partly short columnar; spines variabel, thin or broad, multi-colored or single-colored
flowers large, numerous, usually yellow with red stigma, also reddish, orange or with yellow stigma
fruits fleshy, at ripeness also thin-walled and slackly

Highslide JS
 

Distribution

lowlands of Argentinia, Uruguay, Brazil, Paraguay
steppes and mountains

Growth period

warm, sunny and somewhat airy with cooling down in the night
prevent full sun for slightly spined species
a location outside of the greenhouse is temporarly possible
constant moisture and humidity during the growth period
permanent wetness is to prevent

Winter period

bright but not too cold at about 46–53F (8–12°C) not complete dry
some species of this genus require a warmer winter rest not colder than 53F (12°C)
(e.g. Notocactus mueller-melchersii)

Substrat

the soil should be nutritious humus-rich and permeable to water
addition of coarse gravel, sand, loam and turf
   
Notocactus ottonis (Lehmann) A. Berger (1929)
 
Highslide JS
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Habitat

south Brazil, south Paraguay, Uruguay, northeast Argentinia

Description

± flat globular, 2–4.3 in (5–11 cm) Ø, strong green
8–12 ribs, rounded, slightly humped
areoles ca. 0.4 in (1 cm) distant
10–18 radial spines, acicular, yellow
0–3–4 central spines, to 1 in (2.5 cm) long, somewhat stronger, ± reddish brown, tips brighter
flowers 1.6–2.4 in (4–6 cm) Ø, shiny deep yellow, stigma dark red

Flowering time

June in cultivation
3–4 years from seed
Synonyms Cactus ottonis Lehmann (1827)
Echinocactus ottonis
(Lehmann) Link & Otto (1830)
Malacocarpus ottonis
(Lehmann) Britton & Rose (1922) (incorrect name, Art. 11.4)
Parodia ottonis
(Lehmann) N.P. Taylor (1987)
Peronocactus ottonis
(Lehmann) Doweld (1999) (incorrect name, Art. 11.4)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.

 

 

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