Mediolobivia Backeberg (1942)

between Lobivia and Rebutia placed "middle" Lobivia
dwarf cactus, globular, usually though cylindrical, branching, stem elongated to a turnip root
ribs strong divided or seperate into short roundish tubercles
spines usually a few, tiny, like bristles
flowers funnel form, in red and yellow tinge, with hairs and bristles on the outside
fruits small with a thin skin; seeds black

Highslide JS
 

Distribution

higher mountains in Bolivia and north Argentina

Growth period

sunny to partly shady, airy and not to high temperatures
a open-air location is without any shelter possible
in spring only somewhat mist and after clear visible buds start watering,
later somewhat more moisture especially at high temperatures

Winter period

light, cold and dry at 43–50°F (6–10°C)

Substrat

with addition of humus, not to nutritious
addition of crushed bricks or gravel
   
Mediolobivia diersiana (Rausch) Rausch (1975)
 
Highslide JS
  Highslide JS   Highslide JS
         

Field number

WR631 - collected by Walther Rausch

Habitat

Bolivia
Chuquisaca - Yuquina, Culpina
in 10500 ft (3200 m) altitude

Description

named after Prof. Dr. Diers, Cologne, Germany
dwarf, short cylindrical, 1.2 in (3 cm) high, 0.8 in (2 cm) Ø, light green, with a turnip root
10–11 ribs, straight to slightly twisted, seperate in low tubercles
areoles white to light brown felted
11 radial spines, to 2 mm long, pectinate adjacent, glassy white
central spine is absent
flowers sidewise, light yellow to golden yellow, throat white, style sparsely connate,
greenish white, 5–6 stigma, greenish

Flowering time

May–June in cultivation
November–January in habitat
2–3 years from seed
Synonyms Rebutia diersiana Rausch (1975)
Digitorebutia diersiana
(Rausch) Rausch (1987) (nom. inval.)
Lobivia pygmaea var. diersiana (Rausch) Rausch (1987)
Rebutia pygmaea var. diersiana (Rausch) Lodé (1992)
Rebutia pygmaea
(R. E. Fries) Britton & Rose (1922)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.

 

 

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